3913557120 has 320 divisors, whose sum is σ = 15248787840. Its totient is φ = 948602880.

The previous prime is 3913557107. The next prime is 3913557121. The reversal of 3913557120 is 217553193.

3913557120 is a `hidden beast` number, since 3 + 91 + 3 + 557 + 12 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3913557121) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 566809 + ... + 573671.

It is an arithmetic number, because the mean of its divisors is an integer number (47652462).

Almost surely, 2^3913557120 is an apocalyptic number.

3913557120 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 3913557120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7624393920).

3913557120 is an abundant number, since it is smaller than the sum of its proper divisors (11335230720).

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

3913557120 is a wasteful number, since it uses less digits than its factorization.

3913557120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6905 (or 6884 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 3913557120 is about 62558.4296478101. The cubic root of 3913557120 is about 1575.8827160696.

The spelling of 3913557120 in words is "three billion, nine hundred thirteen million, five hundred fifty-seven thousand, one hundred twenty".