1560961659 has 4 divisors (see below), whose sum is σ = 2081282216. Its totient is φ = 1040641104.

The previous prime is 1560961651. The next prime is 1560961681. The reversal of 1560961659 is 9561690651.

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

It is not a de Polignac number, because 1560961659 - 2³ = 1560961651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1560961651) 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, 260160274 + ... + 260160279.

It is an arithmetic number, because the mean of its divisors is an integer number (520320554).

Almost surely, 2^1560961659 is an apocalyptic number.

1560961659 is a deficient number, since it is larger than the sum of its proper divisors (520320557).

1560961659 is an equidigital number, since it uses as much as digits as its factorization.

1560961659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520320556.

The product of its (nonzero) digits is 437400, while the sum is 48.

The square root of 1560961659 is about 39509.0073147884. The cubic root of 1560961659 is about 1160.0162648829.

The spelling of 1560961659 in words is "one billion, five hundred sixty million, nine hundred sixty-one thousand, six hundred fifty-nine".