118189690 has 16 divisors (see below), whose sum is σ = 223938720. Its totient is φ = 44787600.

The previous prime is 118189667. The next prime is 118189693. The reversal of 118189690 is 96981811.

It is a happy number.

It is a super-2 number, since 2×118189690² = 27937605644592200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118189693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310836 + ... + 311215.

It is an arithmetic number, because the mean of its divisors is an integer number (13996170).

Almost surely, 2^118189690 is an apocalyptic number.

118189690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

118189690 is a deficient number, since it is larger than the sum of its proper divisors (105749030).

118189690 is a wasteful number, since it uses less digits than its factorization.

118189690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622077.

The product of its (nonzero) digits is 31104, while the sum is 43.

The square root of 118189690 is about 10871.5081750418. The cubic root of 118189690 is about 490.7494985552.

The spelling of 118189690 in words is "one hundred eighteen million, one hundred eighty-nine thousand, six hundred ninety".