189830555 has 4 divisors (see below), whose sum is σ = 227796672. Its totient is φ = 151864440.

The previous prime is 189830527. The next prime is 189830561. The reversal of 189830555 is 555038981.

189830555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 189830555 - 2²⁰ = 188781979 is a prime.

It is a super-2 number, since 2×189830555² = 72071279223216050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18983051 + ... + 18983060.

It is an arithmetic number, because the mean of its divisors is an integer number (56949168).

Almost surely, 2^189830555 is an apocalyptic number.

189830555 is a deficient number, since it is larger than the sum of its proper divisors (37966117).

189830555 is an equidigital number, since it uses as much as digits as its factorization.

189830555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37966116.

The product of its (nonzero) digits is 216000, while the sum is 44.

The square root of 189830555 is about 13777.9009649511. The cubic root of 189830555 is about 574.7187584930.

The spelling of 189830555 in words is "one hundred eighty-nine million, eight hundred thirty thousand, five hundred fifty-five".