1308086491 has 2 divisors, whose sum is σ = 1308086492. Its totient is φ = 1308086490.

The previous prime is 1308086467. The next prime is 1308086569. The reversal of 1308086491 is 1946808031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1308086491 - 2⁵ = 1308086459 is a prime.

It is a super-2 number, since 2×1308086491² = 3422180535873386162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1308086431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654043245 + 654043246.

It is an arithmetic number, because the mean of its divisors is an integer number (654043246).

Almost surely, 2^1308086491 is an apocalyptic number.

1308086491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1308086491 is an equidigital number, since it uses as much as digits as its factorization.

1308086491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 1308086491 is about 36167.4783610912. The cubic root of 1308086491 is about 1093.6511657044.

The spelling of 1308086491 in words is "one billion, three hundred eight million, eighty-six thousand, four hundred ninety-one".