3705865290 has 128 divisors (see below), whose sum is σ = 10099353600. Its totient is φ = 966712320.

The previous prime is 3705865283. The next prime is 3705865297. The reversal of 3705865290 is 925685073.

It is a happy number.

3705865290 is a `hidden beast` number, since 3 + 70 + 58 + 6 + 529 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (3705865283) and next prime (3705865297).

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

It is not an unprimeable number, because it can be changed into a prime (3705865297) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3672306 + ... + 3673314.

It is an arithmetic number, because the mean of its divisors is an integer number (78901200).

Almost surely, 2^3705865290 is an apocalyptic number.

3705865290 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 3705865290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5049676800).

3705865290 is an abundant number, since it is smaller than the sum of its proper divisors (6393488310).

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

3705865290 is a wasteful number, since it uses less digits than its factorization.

3705865290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309 (or 1303 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 3705865290 is about 60875.8185981922. The cubic root of 3705865290 is about 1547.4972151778.

The spelling of 3705865290 in words is "three billion, seven hundred five million, eight hundred sixty-five thousand, two hundred ninety".