118149778 has 8 divisors (see below), whose sum is σ = 177708672. Its totient is φ = 58913556.

The previous prime is 118149739. The next prime is 118149797. The reversal of 118149778 is 877941811.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 79750 + ... + 81217.

It is an arithmetic number, because the mean of its divisors is an integer number (22213584).

Almost surely, 2^118149778 is an apocalyptic number.

118149778 is a deficient number, since it is larger than the sum of its proper divisors (59558894).

118149778 is a wasteful number, since it uses less digits than its factorization.

118149778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161336.

The product of its digits is 112896, while the sum is 46.

The square root of 118149778 is about 10869.6723961672. The cubic root of 118149778 is about 490.6942512117.

The spelling of 118149778 in words is "one hundred eighteen million, one hundred forty-nine thousand, seven hundred seventy-eight".