118649155 has 4 divisors (see below), whose sum is σ = 142378992. Its totient is φ = 94919320.

The previous prime is 118649123. The next prime is 118649191. The reversal of 118649155 is 551946811.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 118649155 - 2⁵ = 118649123 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11864911 + ... + 11864920.

It is an arithmetic number, because the mean of its divisors is an integer number (35594748).

Almost surely, 2^118649155 is an apocalyptic number.

118649155 is a deficient number, since it is larger than the sum of its proper divisors (23729837).

118649155 is an equidigital number, since it uses as much as digits as its factorization.

118649155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23729836.

The product of its digits is 43200, while the sum is 40.

The square root of 118649155 is about 10892.6192901432. The cubic root of 118649155 is about 491.3846093920.

The spelling of 118649155 in words is "one hundred eighteen million, six hundred forty-nine thousand, one hundred fifty-five".