189375390 has 48 divisors (see below), whose sum is σ = 494475696. Its totient is φ = 50284800.

The previous prime is 189375379. The next prime is 189375409. The reversal of 189375390 is 93573981.

It is a happy number.

189375390 is a `hidden beast` number, since 1 + 89 + 37 + 539 + 0 = 666.

It is a super-3 number, since 3×189375390³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17325 + ... + 26055.

It is an arithmetic number, because the mean of its divisors is an integer number (10301577).

Almost surely, 2^189375390 is an apocalyptic number.

189375390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189375390 is an abundant number, since it is smaller than the sum of its proper divisors (305100306).

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

189375390 is a wasteful number, since it uses less digits than its factorization.

189375390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8985 (or 8982 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 189375390 is about 13761.3731146278. The cubic root of 189375390 is about 574.2590481312.

The spelling of 189375390 in words is "one hundred eighty-nine million, three hundred seventy-five thousand, three hundred ninety".