1423560644 has 36 divisors (see below), whose sum is σ = 2812338732. Its totient is φ = 629576640.

The previous prime is 1423560587. The next prime is 1423560659. The reversal of 1423560644 is 4460653241.

It can be written as a sum of positive squares in 2 ways, for example, as 1271778244 + 151782400 = 35662^2 + 12320^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21839 + ... + 57654.

Almost surely, 2^1423560644 is an apocalyptic number.

It is an amenable number.

1423560644 is a deficient number, since it is larger than the sum of its proper divisors (1388778088).

1423560644 is a wasteful number, since it uses less digits than its factorization.

1423560644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79556 (or 79543 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 1423560644 is about 37730.1026237671. The cubic root of 1423560644 is about 1124.9295479173.

The spelling of 1423560644 in words is "one billion, four hundred twenty-three million, five hundred sixty thousand, six hundred forty-four".