13491938 has 32 divisors (see below), whose sum is σ = 22809600. Its totient is φ = 5954256.

The previous prime is 13491937. The next prime is 13491953. The reversal of 13491938 is 83919431.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (13491937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37403 + ... + 37761.

It is an arithmetic number, because the mean of its divisors is an integer number (712800).

Almost surely, 2^13491938 is an apocalyptic number.

13491938 is a deficient number, since it is larger than the sum of its proper divisors (9317662).

13491938 is a wasteful number, since it uses less digits than its factorization.

13491938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446.

The product of its digits is 23328, while the sum is 38.

The square root of 13491938 is about 3673.1373510937. The cubic root of 13491938 is about 238.0627497373.

The spelling of 13491938 in words is "thirteen million, four hundred ninety-one thousand, nine hundred thirty-eight".