189849197 has 16 divisors (see below), whose sum is σ = 204672000. Its totient is φ = 175554864.

The previous prime is 189849173. The next prime is 189849223. The reversal of 189849197 is 791948981.

It is a cyclic number.

It is not a de Polignac number, because 189849197 - 2⁶ = 189849133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189849697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182204 + ... + 183242.

It is an arithmetic number, because the mean of its divisors is an integer number (12792000).

Almost surely, 2^189849197 is an apocalyptic number.

It is an amenable number.

189849197 is a deficient number, since it is larger than the sum of its proper divisors (14822803).

189849197 is a wasteful number, since it uses less digits than its factorization.

189849197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280.

The product of its digits is 1306368, while the sum is 56.

The square root of 189849197 is about 13778.5774664876. The cubic root of 189849197 is about 574.7375709833.

The spelling of 189849197 in words is "one hundred eighty-nine million, eight hundred forty-nine thousand, one hundred ninety-seven".