189540860 has 24 divisors (see below), whose sum is σ = 398941200. Its totient is φ = 75643904.

The previous prime is 189540859. The next prime is 189540877. The reversal of 189540860 is 68045981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1574 + ... + 19533.

It is an arithmetic number, because the mean of its divisors is an integer number (16622550).

Almost surely, 2^189540860 is an apocalyptic number.

189540860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189540860 is an abundant number, since it is smaller than the sum of its proper divisors (209400340).

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

189540860 is a wasteful number, since it uses less digits than its factorization.

189540860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21565 (or 21563 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 189540860 is about 13767.3839199755. The cubic root of 189540860 is about 574.4262556763.

The spelling of 189540860 in words is "one hundred eighty-nine million, five hundred forty thousand, eight hundred sixty".