3913756380 has 240 divisors, whose sum is σ = 12689550720. Its totient is φ = 1009262592.

The previous prime is 3913756369. The next prime is 3913756381. The reversal of 3913756380 is 836573193.

3913756380 is a `hidden beast` number, since 3 + 9 + 1 + 3 + 7 + 5 + 638 + 0 = 666.

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 (3913756381) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6782652 + ... + 6783228.

It is an arithmetic number, because the mean of its divisors is an integer number (52873128).

Almost surely, 2^3913756380 is an apocalyptic number.

3913756380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3913756380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6344775360).

3913756380 is an abundant number, since it is smaller than the sum of its proper divisors (8775794340).

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

3913756380 is a wasteful number, since it uses less digits than its factorization.

3913756380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730 (or 719 counting only the distinct ones).

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

The square root of 3913756380 is about 62560.0222186661. The cubic root of 3913756380 is about 1575.9094611382.

The spelling of 3913756380 in words is "three billion, nine hundred thirteen million, seven hundred fifty-six thousand, three hundred eighty".