13157393 has 4 divisors (see below), whose sum is σ = 13353840. Its totient is φ = 12960948.

The previous prime is 13157383. The next prime is 13157399. The reversal of 13157393 is 39375131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13157393 - 2⁴ = 13157377 is a prime.

It is a super-3 number, since 3×13157393³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13157399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98123 + ... + 98256.

It is an arithmetic number, because the mean of its divisors is an integer number (3338460).

Almost surely, 2^13157393 is an apocalyptic number.

It is an amenable number.

13157393 is a deficient number, since it is larger than the sum of its proper divisors (196447).

13157393 is an equidigital number, since it uses as much as digits as its factorization.

13157393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196446.

The product of its digits is 8505, while the sum is 32.

The square root of 13157393 is about 3627.3120902398. The cubic root of 13157393 is about 236.0785970617.

The spelling of 13157393 in words is "thirteen million, one hundred fifty-seven thousand, three hundred ninety-three".