189491336 has 32 divisors (see below), whose sum is σ = 368631000. Its totient is φ = 91209216.

The previous prime is 189491327. The next prime is 189491339. The reversal of 189491336 is 633194981.

It can be written as a sum of positive squares in 4 ways, for example, as 153611236 + 35880100 = 12394^2 + 5990^2 .

It is not an unprimeable number, because it can be changed into a prime (189491339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93890 + ... + 95886.

Almost surely, 2^189491336 is an apocalyptic number.

It is an amenable number.

189491336 is a deficient number, since it is larger than the sum of its proper divisors (179139664).

189491336 is a wasteful number, since it uses less digits than its factorization.

189491336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441 (or 2437 counting only the distinct ones).

The product of its digits is 139968, while the sum is 44.

The square root of 189491336 is about 13765.5852036882. The cubic root of 189491336 is about 574.3762218491.

The spelling of 189491336 in words is "one hundred eighty-nine million, four hundred ninety-one thousand, three hundred thirty-six".