1264180912164 has 27 divisors (see below), whose sum is σ = 3195585469713. Its totient is φ = 421391388672.

The previous prime is 1264180912147. The next prime is 1264180912187. The reversal of 1264180912164 is 4612190814621.

The square root of 1264180912164 is 1124358.

It is a perfect power (a square), and thus also a powerful number.

1264180912164 is a `hidden beast` number, since 12 + 6 + 418 + 0 + 9 + 1 + 216 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1046099384100 + 218081528064 = 1022790^2 + 466992^2 .

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 6652452 + ... + 6839844.

Almost surely, 2^{1264180912164} is an apocalyptic number.

1264180912164 is the 1124358-th square number.

It is an amenable number.

1264180912164 is an abundant number, since it is smaller than the sum of its proper divisors (1931404557549).

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

1264180912164 is an frugal number, since it uses more digits than its factorization.

1264180912164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374796 (or 187398 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 1264180912164 in words is "one trillion, two hundred sixty-four billion, one hundred eighty million, nine hundred twelve thousand, one hundred sixty-four".