118157271 has 4 divisors (see below), whose sum is σ = 157543032. Its totient is φ = 78771512.

The previous prime is 118157269. The next prime is 118157309. The reversal of 118157271 is 172751811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118157271 - 2¹ = 118157269 is a prime.

It is a super-2 number, since 2×118157271² = 27922281380334882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118157261) 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, 19692876 + ... + 19692881.

It is an arithmetic number, because the mean of its divisors is an integer number (39385758).

Almost surely, 2^118157271 is an apocalyptic number.

118157271 is a deficient number, since it is larger than the sum of its proper divisors (39385761).

118157271 is an equidigital number, since it uses as much as digits as its factorization.

118157271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39385760.

The product of its digits is 3920, while the sum is 33.

The square root of 118157271 is about 10870.0170653040. The cubic root of 118157271 is about 490.7046241873.

The spelling of 118157271 in words is "one hundred eighteen million, one hundred fifty-seven thousand, two hundred seventy-one".