1249921164 has 48 divisors (see below), whose sum is σ = 2944390400. Its totient is φ = 412672320.

The previous prime is 1249921163. The next prime is 1249921181. The reversal of 1249921164 is 4611299421.

It is a super-2 number, since 2×1249921164² = 3124605832430229792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1249921163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 681729 + ... + 683559.

Almost surely, 2^1249921164 is an apocalyptic number.

It is an amenable number.

1249921164 is an abundant number, since it is smaller than the sum of its proper divisors (1694469236).

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

1249921164 is a wasteful number, since it uses less digits than its factorization.

1249921164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2350 (or 2348 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 1249921164 is about 35354.2241323438. The cubic root of 1249921164 is about 1077.1946982714.

The spelling of 1249921164 in words is "one billion, two hundred forty-nine million, nine hundred twenty-one thousand, one hundred sixty-four".