189012190 has 32 divisors (see below), whose sum is σ = 360000000. Its totient is φ = 71251488.

The previous prime is 189012181. The next prime is 189012191. The reversal of 189012190 is 91210981.

It is a super-2 number, since 2×189012190² = 71451215937192200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189012191) by changing a digit.

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, 35311 + ... + 40309.

It is an arithmetic number, because the mean of its divisors is an integer number (11250000).

Almost surely, 2^189012190 is an apocalyptic number.

189012190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189012190 is a deficient number, since it is larger than the sum of its proper divisors (170987810).

189012190 is a wasteful number, since it uses less digits than its factorization.

189012190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5224.

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 189012190 is about 13748.1704237328. The cubic root of 189012190 is about 573.8916924665.

The spelling of 189012190 in words is "one hundred eighty-nine million, twelve thousand, one hundred ninety".