1560891345 has 32 divisors (see below), whose sum is σ = 2719785600. Its totient is φ = 759796224.

The previous prime is 1560891313. The next prime is 1560891383. The reversal of 1560891345 is 5431980651.

It is not a de Polignac number, because 1560891345 - 2⁵ = 1560891313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1560891297 and 1560891306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27615 + ... + 62324.

It is an arithmetic number, because the mean of its divisors is an integer number (84993300).

Almost surely, 2^1560891345 is an apocalyptic number.

1560891345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1560891345 is a deficient number, since it is larger than the sum of its proper divisors (1158894255).

1560891345 is a wasteful number, since it uses less digits than its factorization.

1560891345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90049.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 1560891345 is about 39508.1174570493. The cubic root of 1560891345 is about 1159.9988468578.

It can be divided in two parts, 15608 and 91345, that added together give a triangular number (106953 = T₄₆₂).

The spelling of 1560891345 in words is "one billion, five hundred sixty million, eight hundred ninety-one thousand, three hundred forty-five".