1563520465 has 16 divisors (see below), whose sum is σ = 2049014016. Its totient is φ = 1138334400.

The previous prime is 1563520457. The next prime is 1563520477. The reversal of 1563520465 is 5640253651.

It is not a de Polignac number, because 1563520465 - 2³ = 1563520457 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 164781 + ... + 174010.

It is an arithmetic number, because the mean of its divisors is an integer number (128063376).

Almost surely, 2^1563520465 is an apocalyptic number.

It is an amenable number.

1563520465 is a deficient number, since it is larger than the sum of its proper divisors (485493551).

1563520465 is a wasteful number, since it uses less digits than its factorization.

1563520465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338880.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 1563520465 is about 39541.3766199408. The cubic root of 1563520465 is about 1160.6497709725.

It can be divided in two parts, 15635 and 20465, that added together give a square (36100 = 190²).

The spelling of 1563520465 in words is "one billion, five hundred sixty-three million, five hundred twenty thousand, four hundred sixty-five".