13858315920 has 100 divisors (see below), whose sum is σ = 48132006780. Its totient is φ = 3695549184.

The previous prime is 13858315871. The next prime is 13858315943. The reversal of 13858315920 is 2951385831.

13858315920 is a `hidden beast` number, since 1 + 3 + 8 + 58 + 3 + 1 + 592 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6572669184 + 7285646736 = 81072^2 + 85356^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1062835 + ... + 1075794.

Almost surely, 2^13858315920 is an apocalyptic number.

13858315920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13858315920 is an abundant number, since it is smaller than the sum of its proper divisors (34273690860).

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

13858315920 is a wasteful number, since it uses less digits than its factorization.

13858315920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138654 (or 2138639 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 13858315920 in words is "thirteen billion, eight hundred fifty-eight million, three hundred fifteen thousand, nine hundred twenty".