189318030 has 32 divisors (see below), whose sum is σ = 495669888. Its totient is φ = 45895200.

The previous prime is 189318029. The next prime is 189318089. The reversal of 189318030 is 30813981.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 189317982 and 189318000.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 286516 + ... + 287175.

It is an arithmetic number, because the mean of its divisors is an integer number (15489684).

Almost surely, 2^189318030 is an apocalyptic number.

189318030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189318030 is an abundant number, since it is smaller than the sum of its proper divisors (306351858).

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

189318030 is a wasteful number, since it uses less digits than its factorization.

189318030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573712.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 189318030 is about 13759.2888624376. The cubic root of 189318030 is about 574.2010630796.

The spelling of 189318030 in words is "one hundred eighty-nine million, three hundred eighteen thousand, thirty".