189518965 has 16 divisors (see below), whose sum is σ = 244970496. Its totient is φ = 140342400.

The previous prime is 189518929. The next prime is 189518969. The reversal of 189518965 is 569815981.

It is not a de Polignac number, because 189518965 - 2¹¹ = 189516917 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 (189518969) 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, 23016 + ... + 30145.

It is an arithmetic number, because the mean of its divisors is an integer number (15310656).

Almost surely, 2^189518965 is an apocalyptic number.

It is an amenable number.

189518965 is a deficient number, since it is larger than the sum of its proper divisors (55451531).

189518965 is a wasteful number, since it uses less digits than its factorization.

189518965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53220.

The product of its digits is 777600, while the sum is 52.

The square root of 189518965 is about 13766.5887205219. The cubic root of 189518965 is about 574.4041363522.

The spelling of 189518965 in words is "one hundred eighty-nine million, five hundred eighteen thousand, nine hundred sixty-five".