189121364 has 24 divisors (see below), whose sum is σ = 363531840. Its totient is φ = 85688064.

The previous prime is 189121363. The next prime is 189121391. The reversal of 189121364 is 463121981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189121363) 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 7 ways as a sum of consecutive naturals, for example, 52349 + ... + 55844.

It is an arithmetic number, because the mean of its divisors is an integer number (15147160).

Almost surely, 2^189121364 is an apocalyptic number.

It is an amenable number.

189121364 is a deficient number, since it is larger than the sum of its proper divisors (174410476).

189121364 is a wasteful number, since it uses less digits than its factorization.

189121364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108239 (or 108237 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 189121364 is about 13752.1403425067. The cubic root of 189121364 is about 574.0021650458.

The spelling of 189121364 in words is "one hundred eighty-nine million, one hundred twenty-one thousand, three hundred sixty-four".