189849946 has 32 divisors (see below), whose sum is σ = 335700288. Its totient is φ = 79386240.

The previous prime is 189849937. The next prime is 189849991. The reversal of 189849946 is 649948981.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 98286 + ... + 100198.

It is an arithmetic number, because the mean of its divisors is an integer number (10490634).

Almost surely, 2^189849946 is an apocalyptic number.

189849946 is a deficient number, since it is larger than the sum of its proper divisors (145850342).

189849946 is a wasteful number, since it uses less digits than its factorization.

189849946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286.

The product of its digits is 4478976, while the sum is 58.

The square root of 189849946 is about 13778.6046463348. The cubic root of 189849946 is about 574.7383268075.

The spelling of 189849946 in words is "one hundred eighty-nine million, eight hundred forty-nine thousand, nine hundred forty-six".