189970512 has 80 divisors (see below), whose sum is σ = 547018560. Its totient is φ = 56457216.

The previous prime is 189970489. The next prime is 189970549. The reversal of 189970512 is 215079981.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9378 + ... + 21630.

It is an arithmetic number, because the mean of its divisors is an integer number (6837732).

Almost surely, 2^189970512 is an apocalyptic number.

189970512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189970512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273509280).

189970512 is an abundant number, since it is smaller than the sum of its proper divisors (357048048).

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

189970512 is a wasteful number, since it uses less digits than its factorization.

189970512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12300 (or 12294 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 42.

The square root of 189970512 is about 13782.9790684017. The cubic root of 189970512 is about 574.8599653949.

The spelling of 189970512 in words is "one hundred eighty-nine million, nine hundred seventy thousand, five hundred twelve".