189733442 has 8 divisors (see below), whose sum is σ = 288608832. Its totient is φ = 93530500.

The previous prime is 189733433. The next prime is 189733459. The reversal of 189733442 is 244337981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 189733442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 667934 + ... + 668217.

It is an arithmetic number, because the mean of its divisors is an integer number (36076104).

Almost surely, 2^189733442 is an apocalyptic number.

189733442 is a deficient number, since it is larger than the sum of its proper divisors (98875390).

189733442 is a wasteful number, since it uses less digits than its factorization.

189733442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336224.

The product of its digits is 145152, while the sum is 41.

The square root of 189733442 is about 13774.3762835201. The cubic root of 189733442 is about 574.6207374219.

The spelling of 189733442 in words is "one hundred eighty-nine million, seven hundred thirty-three thousand, four hundred forty-two".