1310687489 has 2 divisors, whose sum is σ = 1310687490. Its totient is φ = 1310687488.

The previous prime is 1310687461. The next prime is 1310687501. The reversal of 1310687489 is 9847860131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 949687489 + 361000000 = 30817^2 + 19000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310687489 is a prime.

It is a super-2 number, since 2×1310687489² = 3435803387642250242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1310687459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655343744 + 655343745.

It is an arithmetic number, because the mean of its divisors is an integer number (655343745).

Almost surely, 2^1310687489 is an apocalyptic number.

It is an amenable number.

1310687489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310687489 is an equidigital number, since it uses as much as digits as its factorization.

1310687489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 1310687489 is about 36203.4181949716. The cubic root of 1310687489 is about 1094.3755574539.

The spelling of 1310687489 in words is "one billion, three hundred ten million, six hundred eighty-seven thousand, four hundred eighty-nine".