1298085931 has 2 divisors, whose sum is σ = 1298085932. Its totient is φ = 1298085930.

The previous prime is 1298085869. The next prime is 1298085967. The reversal of 1298085931 is 1395808921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1298085931 is a prime.

It is a super-2 number, since 2×1298085931² = 3370054168520273522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1298085731) 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, 649042965 + 649042966.

It is an arithmetic number, because the mean of its divisors is an integer number (649042966).

Almost surely, 2^1298085931 is an apocalyptic number.

1298085931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298085931 is an equidigital number, since it uses as much as digits as its factorization.

1298085931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 1298085931 is about 36028.9596158424. The cubic root of 1298085931 is about 1090.8569786051.

The spelling of 1298085931 in words is "one billion, two hundred ninety-eight million, eighty-five thousand, nine hundred thirty-one".