1295664944 has 40 divisors (see below), whose sum is σ = 2938957728. Its totient is φ = 541739520.

The previous prime is 1295664889. The next prime is 1295664973. The reversal of 1295664944 is 4494665921.

It is a super-2 number, since 2×1295664944² = 3357495294221046272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1295664892 and 1295664901.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136487 + ... + 145670.

Almost surely, 2^1295664944 is an apocalyptic number.

1295664944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1295664944 is an abundant number, since it is smaller than the sum of its proper divisors (1643292784).

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

1295664944 is a wasteful number, since it uses less digits than its factorization.

1295664944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282213 (or 282207 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 50.

The square root of 1295664944 is about 35995.3461436336. The cubic root of 1295664944 is about 1090.1783912498.

The spelling of 1295664944 in words is "one billion, two hundred ninety-five million, six hundred sixty-four thousand, nine hundred forty-four".