13138494 has 16 divisors (see below), whose sum is σ = 26341632. Its totient is φ = 4368728.

The previous prime is 13138493. The next prime is 13138511. The reversal of 13138494 is 49483131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13138493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187 + ... + 5129.

It is an arithmetic number, because the mean of its divisors is an integer number (1646352).

Almost surely, 2^13138494 is an apocalyptic number.

13138494 is an abundant number, since it is smaller than the sum of its proper divisors (13203138).

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

13138494 is a wasteful number, since it uses less digits than its factorization.

13138494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391.

The product of its digits is 10368, while the sum is 33.

The square root of 13138494 is about 3624.7060570479. The cubic root of 13138494 is about 235.9655101374.

The spelling of 13138494 in words is "thirteen million, one hundred thirty-eight thousand, four hundred ninety-four".