118685490 has 128 divisors (see below), whose sum is σ = 358318080. Its totient is φ = 24441600.

The previous prime is 118685473. The next prime is 118685509. The reversal of 118685490 is 94586811.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 441076 + ... + 441344.

It is an arithmetic number, because the mean of its divisors is an integer number (2799360).

Almost surely, 2^118685490 is an apocalyptic number.

118685490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 118685490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179159040).

118685490 is an abundant number, since it is smaller than the sum of its proper divisors (239632590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118685490 is a wasteful number, since it uses less digits than its factorization.

118685490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 118685490 is about 10894.2870349555. The cubic root of 118685490 is about 491.4347646516.

The spelling of 118685490 in words is "one hundred eighteen million, six hundred eighty-five thousand, four hundred ninety".