118540778 has 4 divisors (see below), whose sum is σ = 177811170. Its totient is φ = 59270388.

The previous prime is 118540727. The next prime is 118540783. The reversal of 118540778 is 877045811.

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

It can be written as a sum of positive squares in only one way, i.e., 92602129 + 25938649 = 9623^2 + 5093^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29635193 + ... + 29635196.

Almost surely, 2^118540778 is an apocalyptic number.

118540778 is a deficient number, since it is larger than the sum of its proper divisors (59270392).

118540778 is an equidigital number, since it uses as much as digits as its factorization.

118540778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59270391.

The product of its (nonzero) digits is 62720, while the sum is 41.

The square root of 118540778 is about 10887.6433630056. The cubic root of 118540778 is about 491.2349496303.

The spelling of 118540778 in words is "one hundred eighteen million, five hundred forty thousand, seven hundred seventy-eight".