118108778 has 4 divisors (see below), whose sum is σ = 177163170. Its totient is φ = 59054388.

The previous prime is 118108777. The next prime is 118108799. The reversal of 118108778 is 877801811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 877801811 = 191 ⋅4595821.

It can be written as a sum of positive squares in only one way, i.e., 110397049 + 7711729 = 10507^2 + 2777^2 .

It is not an unprimeable number, because it can be changed into a prime (118108777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29527193 + ... + 29527196.

Almost surely, 2^118108778 is an apocalyptic number.

118108778 is a deficient number, since it is larger than the sum of its proper divisors (59054392).

118108778 is an equidigital number, since it uses as much as digits as its factorization.

118108778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59054391.

The product of its (nonzero) digits is 25088, while the sum is 41.

The square root of 118108778 is about 10867.7862511185. The cubic root of 118108778 is about 490.6374848703.

The spelling of 118108778 in words is "one hundred eighteen million, one hundred eight thousand, seven hundred seventy-eight".