118690387 has 2 divisors, whose sum is σ = 118690388. Its totient is φ = 118690386.

The previous prime is 118690381. The next prime is 118690391. The reversal of 118690387 is 783096811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 118690387 - 2⁷ = 118690259 is a prime.

It is not a weakly prime, because it can be changed into another prime (118690381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59345193 + 59345194.

It is an arithmetic number, because the mean of its divisors is an integer number (59345194).

Almost surely, 2^118690387 is an apocalyptic number.

118690387 is a deficient number, since it is larger than the sum of its proper divisors (1).

118690387 is an equidigital number, since it uses as much as digits as its factorization.

118690387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 118690387 is about 10894.5117834624. The cubic root of 118690387 is about 491.4415234754.

The spelling of 118690387 in words is "one hundred eighteen million, six hundred ninety thousand, three hundred eighty-seven".