1513278287 has 2 divisors, whose sum is σ = 1513278288. Its totient is φ = 1513278286.

The previous prime is 1513278269. The next prime is 1513278289. The reversal of 1513278287 is 7828723151.

It is a strong prime.

It is an emirp because it is prime and its reverse (7828723151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1513278287 - 2²⁸ = 1244842831 is a prime.

It is a super-2 number, since 2×1513278287² = 4580022347811308738, which contains 22 as substring.

Together with 1513278289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1513278289) 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 as a sum of consecutive naturals, namely, 756639143 + 756639144.

It is an arithmetic number, because the mean of its divisors is an integer number (756639144).

Almost surely, 2^1513278287 is an apocalyptic number.

1513278287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513278287 is an equidigital number, since it uses as much as digits as its factorization.

1513278287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 44.

The square root of 1513278287 is about 38900.8777150336. The cubic root of 1513278287 is about 1148.0820676376.

The spelling of 1513278287 in words is "one billion, five hundred thirteen million, two hundred seventy-eight thousand, two hundred eighty-seven".