13156938 has 16 divisors (see below), whose sum is σ = 29237760. Its totient is φ = 4385628.

The previous prime is 13156937. The next prime is 13156961. The reversal of 13156938 is 83965131.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13156933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121770 + ... + 121877.

It is an arithmetic number, because the mean of its divisors is an integer number (1827360).

Almost surely, 2^13156938 is an apocalyptic number.

13156938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13156938 is an abundant number, since it is smaller than the sum of its proper divisors (16080822).

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

13156938 is a wasteful number, since it uses less digits than its factorization.

13156938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243658 (or 243652 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 13156938 is about 3627.2493710800. The cubic root of 13156938 is about 236.0758757273.

The spelling of 13156938 in words is "thirteen million, one hundred fifty-six thousand, nine hundred thirty-eight".