1345817715 has 16 divisors (see below), whose sum is σ = 2349063936. Its totient is φ = 652517600.

The previous prime is 1345817701. The next prime is 1345817723. The reversal of 1345817715 is 5177185431.

It is a de Polignac number, because none of the positive numbers 2^k-1345817715 is a prime.

It is a super-2 number, since 2×1345817715² = 3622450644015642450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4078071 + ... + 4078400.

It is an arithmetic number, because the mean of its divisors is an integer number (146816496).

Almost surely, 2^1345817715 is an apocalyptic number.

1345817715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1345817715 is a deficient number, since it is larger than the sum of its proper divisors (1003246221).

1345817715 is a wasteful number, since it uses less digits than its factorization.

1345817715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8156490.

The product of its digits is 117600, while the sum is 42.

The square root of 1345817715 is about 36685.3883037920. The cubic root of 1345817715 is about 1104.0669601071.

The spelling of 1345817715 in words is "one billion, three hundred forty-five million, eight hundred seventeen thousand, seven hundred fifteen".