1215066164 has 24 divisors (see below), whose sum is σ = 2310951720. Its totient is φ = 555652224.

The previous prime is 1215066161. The next prime is 1215066217. The reversal of 1215066164 is 4616605121.

It can be written as a sum of positive squares in 4 ways, for example, as 488763664 + 726302500 = 22108^2 + 26950^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1215066164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215066161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101519 + ... + 112854.

It is an arithmetic number, because the mean of its divisors is an integer number (96289655).

Almost surely, 2^1215066164 is an apocalyptic number.

It is an amenable number.

1215066164 is a deficient number, since it is larger than the sum of its proper divisors (1095885556).

1215066164 is a wasteful number, since it uses less digits than its factorization.

1215066164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214499 (or 214497 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1215066164 is about 34857.7991846875. The cubic root of 1215066164 is about 1067.0873604019.

The spelling of 1215066164 in words is "one billion, two hundred fifteen million, sixty-six thousand, one hundred sixty-four".