118510913 has 2 divisors, whose sum is σ = 118510914. Its totient is φ = 118510912.

The previous prime is 118510883. The next prime is 118510957. The reversal of 118510913 is 319015811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117137329 + 1373584 = 10823^2 + 1172^2 .

It is an emirp because it is prime and its reverse (319015811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118510913 - 2¹⁴ = 118494529 is a prime.

It is not a weakly prime, because it can be changed into another prime (118510993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59255456 + 59255457.

It is an arithmetic number, because the mean of its divisors is an integer number (59255457).

Almost surely, 2^118510913 is an apocalyptic number.

It is an amenable number.

118510913 is a deficient number, since it is larger than the sum of its proper divisors (1).

118510913 is an equidigital number, since it uses as much as digits as its factorization.

118510913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 29.

The square root of 118510913 is about 10886.2717676898. The cubic root of 118510913 is about 491.1936924803.

The spelling of 118510913 in words is "one hundred eighteen million, five hundred ten thousand, nine hundred thirteen".