1315587461 has 2 divisors, whose sum is σ = 1315587462. Its totient is φ = 1315587460.

The previous prime is 1315587443. The next prime is 1315587479. The reversal of 1315587461 is 1647855131.

It is a balanced prime because it is at equal distance from previous prime (1315587443) and next prime (1315587479).

It can be written as a sum of positive squares in only one way, i.e., 1200969025 + 114618436 = 34655^2 + 10706^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315587461 - 2¹⁸ = 1315325317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315587421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657793730 + 657793731.

It is an arithmetic number, because the mean of its divisors is an integer number (657793731).

Almost surely, 2^1315587461 is an apocalyptic number.

It is an amenable number.

1315587461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315587461 is an equidigital number, since it uses as much as digits as its factorization.

1315587461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 41.

The square root of 1315587461 is about 36271.0278459268. The cubic root of 1315587461 is about 1095.7376266141.

The spelling of 1315587461 in words is "one billion, three hundred fifteen million, five hundred eighty-seven thousand, four hundred sixty-one".