118186157 has 4 divisors (see below), whose sum is σ = 118315680. Its totient is φ = 118056636.

The previous prime is 118186147. The next prime is 118186163. The reversal of 118186157 is 751681811.

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 118186157 - 2⁶ = 118186093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118186157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118186127) 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 3 ways as a sum of consecutive naturals, for example, 63383 + ... + 65220.

It is an arithmetic number, because the mean of its divisors is an integer number (29578920).

Almost surely, 2^118186157 is an apocalyptic number.

It is an amenable number.

118186157 is a deficient number, since it is larger than the sum of its proper divisors (129523).

118186157 is an equidigital number, since it uses as much as digits as its factorization.

118186157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129522.

The product of its digits is 13440, while the sum is 38.

The square root of 118186157 is about 10871.3456848727. The cubic root of 118186157 is about 490.7446085763.

The spelling of 118186157 in words is "one hundred eighteen million, one hundred eighty-six thousand, one hundred fifty-seven".