195231564 has 54 divisors (see below), whose sum is σ = 542456460. Its totient is φ = 59159760.

The previous prime is 195231563. The next prime is 195231581. The reversal of 195231564 is 465132591.

195231564 is a `hidden beast` number, since 1 + 95 + 2 + 3 + 1 + 564 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (195231563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18054 + ... + 26765.

It is an arithmetic number, because the mean of its divisors is an integer number (10045490).

Almost surely, 2^195231564 is an apocalyptic number.

It is an amenable number.

195231564 is an abundant number, since it is smaller than the sum of its proper divisors (347224896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195231564 is a wasteful number, since it uses less digits than its factorization.

195231564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44851 (or 44835 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 195231564 is about 13972.5289049621. The cubic root of 195231564 is about 580.1184498469.

The spelling of 195231564 in words is "one hundred ninety-five million, two hundred thirty-one thousand, five hundred sixty-four".