1297286515 has 12 divisors (see below), whose sum is σ = 1810906416. Its totient is φ = 889567728.

The previous prime is 1297286509. The next prime is 1297286539. The reversal of 1297286515 is 5156827921.

It is not a de Polignac number, because 1297286515 - 2⁷ = 1297286387 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2647279 + ... + 2647768.

It is an arithmetic number, because the mean of its divisors is an integer number (150908868).

Almost surely, 2^1297286515 is an apocalyptic number.

1297286515 is a deficient number, since it is larger than the sum of its proper divisors (513619901).

1297286515 is an equidigital number, since it uses as much as digits as its factorization.

1297286515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5295066 (or 5295059 counting only the distinct ones).

The product of its digits is 302400, while the sum is 46.

The square root of 1297286515 is about 36017.8638317155. The cubic root of 1297286515 is about 1090.6330007267.

The spelling of 1297286515 in words is "one billion, two hundred ninety-seven million, two hundred eighty-six thousand, five hundred fifteen".