118161898 has 8 divisors (see below), whose sum is σ = 177491520. Its totient is φ = 58998060.

The previous prime is 118161881. The next prime is 118161907. The reversal of 118161898 is 898161811.

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, 39648 + ... + 42523.

It is an arithmetic number, because the mean of its divisors is an integer number (22186440).

Almost surely, 2^118161898 is an apocalyptic number.

118161898 is a deficient number, since it is larger than the sum of its proper divisors (59329622).

118161898 is an equidigital number, since it uses as much as digits as its factorization.

118161898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82892.

The product of its digits is 27648, while the sum is 43.

The square root of 118161898 is about 10870.2298963729. The cubic root of 118161898 is about 490.7110293811.

The spelling of 118161898 in words is "one hundred eighteen million, one hundred sixty-one thousand, eight hundred ninety-eight".