118985690 has 16 divisors (see below), whose sum is σ = 219398760. Its totient is φ = 46433280.

The previous prime is 118985681. The next prime is 118985701. The reversal of 118985690 is 96589811.

It can be written as a sum of positive squares in 4 ways, for example, as 48038761 + 70946929 = 6931^2 + 8423^2 .

It is a super-2 number, since 2×118985690² = 28315188849552200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144695 + ... + 145514.

Almost surely, 2^118985690 is an apocalyptic number.

118985690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

118985690 is a deficient number, since it is larger than the sum of its proper divisors (100413070).

118985690 is a wasteful number, since it uses less digits than its factorization.

118985690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290257.

The product of its (nonzero) digits is 155520, while the sum is 47.

The square root of 118985690 is about 10908.0561971416. The cubic root of 118985690 is about 491.8487565831.

The spelling of 118985690 in words is "one hundred eighteen million, nine hundred eighty-five thousand, six hundred ninety".