118556869 has 2 divisors, whose sum is σ = 118556870. Its totient is φ = 118556868.

The previous prime is 118556839. The next prime is 118556887. The reversal of 118556869 is 968655811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116964225 + 1592644 = 10815^2 + 1262^2 .

It is a cyclic number.

It is not a de Polignac number, because 118556869 - 2¹⁵ = 118524101 is a prime.

It is a super-2 number, since 2×118556869² = 28111462374166322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118556819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59278434 + 59278435.

It is an arithmetic number, because the mean of its divisors is an integer number (59278435).

Almost surely, 2^118556869 is an apocalyptic number.

It is an amenable number.

118556869 is a deficient number, since it is larger than the sum of its proper divisors (1).

118556869 is an equidigital number, since it uses as much as digits as its factorization.

118556869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 49.

The square root of 118556869 is about 10888.3822949050. The cubic root of 118556869 is about 491.2571757483.

The spelling of 118556869 in words is "one hundred eighteen million, five hundred fifty-six thousand, eight hundred sixty-nine".