915144564 has 12 divisors (see below), whose sum is σ = 2135337344. Its totient is φ = 305048184.

The previous prime is 915144563. The next prime is 915144599. The reversal of 915144564 is 465441519.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (915144563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38131012 + ... + 38131035.

Almost surely, 2^915144564 is an apocalyptic number.

It is an amenable number.

915144564 is an abundant number, since it is smaller than the sum of its proper divisors (1220192780).

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

915144564 is a wasteful number, since it uses less digits than its factorization.

915144564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76262054 (or 76262052 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 915144564 is about 30251.3563993418. The cubic root of 915144564 is about 970.8748135866.

The spelling of 915144564 in words is "nine hundred fifteen million, one hundred forty-four thousand, five hundred sixty-four".