189100030 has 32 divisors (see below), whose sum is σ = 392656896. Its totient is φ = 64225824.

The previous prime is 189100013. The next prime is 189100033. The reversal of 189100030 is 30001981.

It is a junction number, because it is equal to n+sod(n) for n = 189099974 and 189100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189100033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5134 + ... + 20113.

It is an arithmetic number, because the mean of its divisors is an integer number (12270528).

Almost surely, 2^189100030 is an apocalyptic number.

189100030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189100030 is an abundant number, since it is smaller than the sum of its proper divisors (203556866).

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

189100030 is a wasteful number, since it uses less digits than its factorization.

189100030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25368.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 189100030 is about 13751.3646595529. The cubic root of 189100030 is about 573.9805806297.

The spelling of 189100030 in words is "one hundred eighty-nine million, one hundred thousand, thirty".