1322957644 has 12 divisors (see below), whose sum is σ = 2377748464. Its totient is φ = 643600944.

The previous prime is 1322957633. The next prime is 1322957653. The reversal of 1322957644 is 4467592231.

It is a self number, because there is not a number n which added to its sum of digits gives 1322957644.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4469304 + ... + 4469599.

Almost surely, 2^1322957644 is an apocalyptic number.

It is an amenable number.

1322957644 is a deficient number, since it is larger than the sum of its proper divisors (1054790820).

1322957644 is a wasteful number, since it uses less digits than its factorization.

1322957644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8938944 (or 8938942 counting only the distinct ones).

The product of its digits is 362880, while the sum is 43.

The square root of 1322957644 is about 36372.4847102862. The cubic root of 1322957644 is about 1097.7799975718.

The spelling of 1322957644 in words is "one billion, three hundred twenty-two million, nine hundred fifty-seven thousand, six hundred forty-four".