1334661563 has 4 divisors (see below), whose sum is σ = 1365700248. Its totient is φ = 1303622880.

The previous prime is 1334661547. The next prime is 1334661599. The reversal of 1334661563 is 3651664331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1334661563 - 2⁴ = 1334661547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1334661463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15519278 + ... + 15519363.

It is an arithmetic number, because the mean of its divisors is an integer number (341425062).

Almost surely, 2^1334661563 is an apocalyptic number.

1334661563 is a deficient number, since it is larger than the sum of its proper divisors (31038685).

1334661563 is an equidigital number, since it uses as much as digits as its factorization.

1334661563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31038684.

The product of its digits is 116640, while the sum is 38.

The square root of 1334661563 is about 36533.0201735362. The cubic root of 1334661563 is about 1101.0077714836.

The spelling of 1334661563 in words is "one billion, three hundred thirty-four million, six hundred sixty-one thousand, five hundred sixty-three".