1423564656 has 40 divisors (see below), whose sum is σ = 3679954944. Its totient is φ = 474210240.

The previous prime is 1423564643. The next prime is 1423564679. The reversal of 1423564656 is 6564653241.

It is a congruent number.

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, 71121 + ... + 88911.

Almost surely, 2^1423564656 is an apocalyptic number.

1423564656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1423564656 is an abundant number, since it is smaller than the sum of its proper divisors (2256390288).

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

1423564656 is a wasteful number, since it uses less digits than its factorization.

1423564656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19469 (or 19463 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The square root of 1423564656 is about 37730.1557908260. The cubic root of 1423564656 is about 1124.9306047071.

The spelling of 1423564656 in words is "one billion, four hundred twenty-three million, five hundred sixty-four thousand, six hundred fifty-six".