1563673056 has 96 divisors (see below), whose sum is σ = 4741244928. Its totient is φ = 445962240.

The previous prime is 1563673043. The next prime is 1563673063. The reversal of 1563673056 is 6503763651.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1563672999 and 1563673017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25600 + ... + 61503.

It is an arithmetic number, because the mean of its divisors is an integer number (49387968).

Almost surely, 2^1563673056 is an apocalyptic number.

1563673056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1563673056 is an abundant number, since it is smaller than the sum of its proper divisors (3177571872).

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

1563673056 is a wasteful number, since it uses less digits than its factorization.

1563673056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87144 (or 87136 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 42.

The square root of 1563673056 is about 39543.3060833310. The cubic root of 1563673056 is about 1160.6875274227.

The spelling of 1563673056 in words is "one billion, five hundred sixty-three million, six hundred seventy-three thousand, fifty-six".