13157118 has 48 divisors (see below), whose sum is σ = 31253040. Its totient is φ = 3975552.

The previous prime is 13157107. The next prime is 13157119. The reversal of 13157118 is 81175131.

It is a junction number, because it is equal to n+sod(n) for n = 13157091 and 13157100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13157119) 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 23 ways as a sum of consecutive naturals, for example, 13330 + ... + 14282.

It is an arithmetic number, because the mean of its divisors is an integer number (651105).

Almost surely, 2^13157118 is an apocalyptic number.

13157118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13157118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15626520).

13157118 is an abundant number, since it is smaller than the sum of its proper divisors (18095922).

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

13157118 is a wasteful number, since it uses less digits than its factorization.

13157118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033 (or 1030 counting only the distinct ones).

The product of its digits is 840, while the sum is 27.

The square root of 13157118 is about 3627.2741831849. The cubic root of 13157118 is about 236.0769523066.

The spelling of 13157118 in words is "thirteen million, one hundred fifty-seven thousand, one hundred eighteen".