1563501372 has 12 divisors (see below), whose sum is σ = 3648169896. Its totient is φ = 521167120.

The previous prime is 1563501353. The next prime is 1563501427. The reversal of 1563501372 is 2731053651.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 65145879 + ... + 65145902.

It is an arithmetic number, because the mean of its divisors is an integer number (304014158).

Almost surely, 2^1563501372 is an apocalyptic number.

1563501372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1563501372 is an abundant number, since it is smaller than the sum of its proper divisors (2084668524).

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

1563501372 is a wasteful number, since it uses less digits than its factorization.

1563501372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130291788 (or 130291786 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 1563501372 is about 39541.1351885603. The cubic root of 1563501372 is about 1160.6450465110.

The spelling of 1563501372 in words is "one billion, five hundred sixty-three million, five hundred one thousand, three hundred seventy-two".