189972375 has 16 divisors (see below), whose sum is σ = 316114656. Its totient is φ = 101318400.

The previous prime is 189972329. The next prime is 189972379. The reversal of 189972375 is 573279981.

It is not a de Polignac number, because 189972375 - 2⁸ = 189972119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189972379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252922 + ... + 253671.

It is an arithmetic number, because the mean of its divisors is an integer number (19757166).

Almost surely, 2^189972375 is an apocalyptic number.

189972375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189972375 is a deficient number, since it is larger than the sum of its proper divisors (126142281).

189972375 is an equidigital number, since it uses as much as digits as its factorization.

189972375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506611 (or 506601 counting only the distinct ones).

The product of its digits is 952560, while the sum is 51.

The square root of 189972375 is about 13783.0466515934. The cubic root of 189972375 is about 574.8618445648.

The spelling of 189972375 in words is "one hundred eighty-nine million, nine hundred seventy-two thousand, three hundred seventy-five".