118499830 has 16 divisors (see below), whose sum is σ = 218260944. Its totient is φ = 46297440.

The previous prime is 118499819. The next prime is 118499833. The reversal of 118499830 is 38994811.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118499833) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 137361 + ... + 138220.

It is an arithmetic number, because the mean of its divisors is an integer number (13641309).

Almost surely, 2^118499830 is an apocalyptic number.

118499830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

118499830 is a deficient number, since it is larger than the sum of its proper divisors (99761114).

118499830 is a wasteful number, since it uses less digits than its factorization.

118499830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275631.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 118499830 is about 10885.7627201772. The cubic root of 118499830 is about 491.1783800525.

The spelling of 118499830 in words is "one hundred eighteen million, four hundred ninety-nine thousand, eight hundred thirty".