189097389 has 16 divisors (see below), whose sum is σ = 301694400. Its totient is φ = 116367408.

The previous prime is 189097379. The next prime is 189097393. The reversal of 189097389 is 983790981.

It is not a de Polignac number, because 189097389 - 2⁷ = 189097261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189097319) 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, 269019 + ... + 269720.

It is an arithmetic number, because the mean of its divisors is an integer number (18855900).

Almost surely, 2^189097389 is an apocalyptic number.

It is an amenable number.

189097389 is a deficient number, since it is larger than the sum of its proper divisors (112597011).

189097389 is a wasteful number, since it uses less digits than its factorization.

189097389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538761 (or 538755 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The square root of 189097389 is about 13751.2686323844. The cubic root of 189097389 is about 573.9779085170.

The spelling of 189097389 in words is "one hundred eighty-nine million, ninety-seven thousand, three hundred eighty-nine".