3613857390 has 384 divisors, whose sum is σ = 11668930560. Its totient is φ = 790352640.

The previous prime is 3613857389. The next prime is 3613857391. The reversal of 3613857390 is 937583163.

It is an interprime number because it is at equal distance from previous prime (3613857389) and next prime (3613857391).

It is a super-2 number, since 2×3613857390² = 26119930470515224200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3613857391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 28455507 + ... + 28455633.

It is an arithmetic number, because the mean of its divisors is an integer number (30387840).

Almost surely, 2^3613857390 is an apocalyptic number.

3613857390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3613857390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5834465280).

3613857390 is an abundant number, since it is smaller than the sum of its proper divisors (8055073170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3613857390 is a wasteful number, since it uses less digits than its factorization.

3613857390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 3613857390 is about 60115.3673364806. The cubic root of 3613857390 is about 1534.5828374751.

It can be divided in two parts, 36138 and 57390, that added together give a triangular number (93528 = T₄₃₂).

The spelling of 3613857390 in words is "three billion, six hundred thirteen million, eight hundred fifty-seven thousand, three hundred ninety".