1345977515 has 4 divisors (see below), whose sum is σ = 1615173024. Its totient is φ = 1076782008.

The previous prime is 1345977491. The next prime is 1345977517. The reversal of 1345977515 is 5157795431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5157795431 = 71257 ⋅72383.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345977515 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1345977515.

It is not an unprimeable number, because it can be changed into a prime (1345977517) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 134597747 + ... + 134597756.

It is an arithmetic number, because the mean of its divisors is an integer number (403793256).

Almost surely, 2^1345977515 is an apocalyptic number.

1345977515 is a deficient number, since it is larger than the sum of its proper divisors (269195509).

1345977515 is an equidigital number, since it uses as much as digits as its factorization.

1345977515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269195508.

The product of its digits is 661500, while the sum is 47.

The square root of 1345977515 is about 36687.5662179982. The cubic root of 1345977515 is about 1104.1106566929.

The spelling of 1345977515 in words is "one billion, three hundred forty-five million, nine hundred seventy-seven thousand, five hundred fifteen".