118091730 has 64 divisors (see below), whose sum is σ = 294409728. Its totient is φ = 30293760.

The previous prime is 118091719. The next prime is 118091731. The reversal of 118091730 is 37190811.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (118091731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85324 + ... + 86696.

It is an arithmetic number, because the mean of its divisors is an integer number (4600152).

Almost surely, 2^118091730 is an apocalyptic number.

118091730 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 118091730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147204864).

118091730 is an abundant number, since it is smaller than the sum of its proper divisors (176317998).

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

118091730 is a wasteful number, since it uses less digits than its factorization.

118091730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 118091730 is about 10867.0018864450. The cubic root of 118091730 is about 490.6138772818.

The spelling of 118091730 in words is "one hundred eighteen million, ninety-one thousand, seven hundred thirty".