1264513892 has 12 divisors (see below), whose sum is σ = 2213917440. Its totient is φ = 631966056.

The previous prime is 1264513891. The next prime is 1264513931. The reversal of 1264513892 is 2983154621.

It is not an unprimeable number, because it can be changed into a prime (1264513891) 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, 62792 + ... + 80447.

It is an arithmetic number, because the mean of its divisors is an integer number (184493120).

Almost surely, 2^1264513892 is an apocalyptic number.

It is an amenable number.

1264513892 is a deficient number, since it is larger than the sum of its proper divisors (949403548).

1264513892 is a wasteful number, since it uses less digits than its factorization.

1264513892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145450 (or 145448 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 1264513892 is about 35560.0041057365. The cubic root of 1264513892 is about 1081.3705428240.

The spelling of 1264513892 in words is "one billion, two hundred sixty-four million, five hundred thirteen thousand, eight hundred ninety-two".