118309157 has 2 divisors, whose sum is σ = 118309158. Its totient is φ = 118309156.

The previous prime is 118309123. The next prime is 118309189. The reversal of 118309157 is 751903811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116942596 + 1366561 = 10814^2 + 1169^2 .

It is a cyclic number.

It is not a de Polignac number, because 118309157 - 2⁸ = 118308901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118309117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59154578 + 59154579.

It is an arithmetic number, because the mean of its divisors is an integer number (59154579).

Almost surely, 2^118309157 is an apocalyptic number.

It is an amenable number.

118309157 is a deficient number, since it is larger than the sum of its proper divisors (1).

118309157 is an equidigital number, since it uses as much as digits as its factorization.

118309157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 35.

The square root of 118309157 is about 10877.0012871195. The cubic root of 118309157 is about 490.9147939303.

The spelling of 118309157 in words is "one hundred eighteen million, three hundred nine thousand, one hundred fifty-seven".