189198700 has 18 divisors (see below), whose sum is σ = 410561396. Its totient is φ = 75679440.

The previous prime is 189198683. The next prime is 189198701. The reversal of 189198700 is 7891981.

It is a super-2 number, since 2×189198700² = 71592296163380000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (189198701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 945894 + ... + 946093.

Almost surely, 2^189198700 is an apocalyptic number.

189198700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189198700 is an abundant number, since it is smaller than the sum of its proper divisors (221362696).

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

189198700 is a wasteful number, since it uses less digits than its factorization.

189198700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892001 (or 1891994 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 43.

The square root of 189198700 is about 13754.9518356118. The cubic root of 189198700 is about 574.0803952028.

The spelling of 189198700 in words is "one hundred eighty-nine million, one hundred ninety-eight thousand, seven hundred".