189660842 has 16 divisors (see below), whose sum is σ = 325840320. Its totient is φ = 81106368.

The previous prime is 189660833. The next prime is 189660881. The reversal of 189660842 is 248066981.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 189660793 and 189660802.

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, 7967 + ... + 21042.

It is an arithmetic number, because the mean of its divisors is an integer number (20365020).

Almost surely, 2^189660842 is an apocalyptic number.

189660842 is a deficient number, since it is larger than the sum of its proper divisors (136179478).

189660842 is a wasteful number, since it uses less digits than its factorization.

189660842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29485.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 189660842 is about 13771.7407033388. The cubic root of 189660842 is about 574.5474367126.

The spelling of 189660842 in words is "one hundred eighty-nine million, six hundred sixty thousand, eight hundred forty-two".