13120381938 has 64 divisors (see below), whose sum is σ = 26769899520. Its totient is φ = 4286520000.

The previous prime is 13120381933. The next prime is 13120381949. The reversal of 13120381938 is 83918302131.

It is a junction number, because it is equal to n+sod(n) for n = 13120381896 and 13120381905.

It is not an unprimeable number, because it can be changed into a prime (13120381933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34618233 + ... + 34618611.

It is an arithmetic number, because the mean of its divisors is an integer number (418279680).

Almost surely, 2^13120381938 is an apocalyptic number.

13120381938 is an abundant number, since it is smaller than the sum of its proper divisors (13649517582).

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

13120381938 is a wasteful number, since it uses less digits than its factorization.

13120381938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943.

The product of its (nonzero) digits is 31104, while the sum is 39.

The spelling of 13120381938 in words is "thirteen billion, one hundred twenty million, three hundred eighty-one thousand, nine hundred thirty-eight".