1249845964 has 6 divisors (see below), whose sum is σ = 2187230444. Its totient is φ = 624922980.

The previous prime is 1249845953. The next prime is 1249845991. The reversal of 1249845964 is 4695489421.

It is a super-2 number, since 2×1249845964² = 3124229867454178592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156230742 + ... + 156230749.

Almost surely, 2^1249845964 is an apocalyptic number.

It is an amenable number.

1249845964 is a deficient number, since it is larger than the sum of its proper divisors (937384480).

1249845964 is a wasteful number, since it uses less digits than its factorization.

1249845964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312461495 (or 312461493 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 52.

The square root of 1249845964 is about 35353.1605942100. The cubic root of 1249845964 is about 1077.1730951314.

The spelling of 1249845964 in words is "one billion, two hundred forty-nine million, eight hundred forty-five thousand, nine hundred sixty-four".