189498646 has 12 divisors (see below), whose sum is σ = 288567468. Its totient is φ = 93330732.

The previous prime is 189498607. The next prime is 189498649. The reversal of 189498646 is 646894981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189498649) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1576 + ... + 19531.

It is an arithmetic number, because the mean of its divisors is an integer number (24047289).

Almost surely, 2^189498646 is an apocalyptic number.

189498646 is a deficient number, since it is larger than the sum of its proper divisors (99068822).

189498646 is an equidigital number, since it uses as much as digits as its factorization.

189498646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21243 (or 21176 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 55.

The square root of 189498646 is about 13765.8507183537. The cubic root of 189498646 is about 574.3836076507.

The spelling of 189498646 in words is "one hundred eighty-nine million, four hundred ninety-eight thousand, six hundred forty-six".