118685519 has 2 divisors, whose sum is σ = 118685520. Its totient is φ = 118685518.

The previous prime is 118685513. The next prime is 118685537. The reversal of 118685519 is 915586811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118685519 - 2²⁰ = 117636943 is a prime.

It is a super-2 number, since 2×118685519² = 28172504840598722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118685519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118685513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59342759 + 59342760.

It is an arithmetic number, because the mean of its divisors is an integer number (59342760).

Almost surely, 2^118685519 is an apocalyptic number.

118685519 is a deficient number, since it is larger than the sum of its proper divisors (1).

118685519 is an equidigital number, since it uses as much as digits as its factorization.

118685519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 44.

The square root of 118685519 is about 10894.2883659283. The cubic root of 118685519 is about 491.4348046779.

The spelling of 118685519 in words is "one hundred eighteen million, six hundred eighty-five thousand, five hundred nineteen".