118878857 has 2 divisors, whose sum is σ = 118878858. Its totient is φ = 118878856.

The previous prime is 118878829. The next prime is 118878863. The reversal of 118878857 is 758878811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66113161 + 52765696 = 8131^2 + 7264^2 .

It is a cyclic number.

It is not a de Polignac number, because 118878857 - 2¹⁰ = 118877833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 118878799 and 118878808.

It is not a weakly prime, because it can be changed into another prime (118868857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59439428 + 59439429.

It is an arithmetic number, because the mean of its divisors is an integer number (59439429).

Almost surely, 2^118878857 is an apocalyptic number.

It is an amenable number.

118878857 is a deficient number, since it is larger than the sum of its proper divisors (1).

118878857 is an equidigital number, since it uses as much as digits as its factorization.

118878857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1003520, while the sum is 53.

The square root of 118878857 is about 10903.1581204713. The cubic root of 118878857 is about 491.7015080292.

The spelling of 118878857 in words is "one hundred eighteen million, eight hundred seventy-eight thousand, eight hundred fifty-seven".