1330498681 has 2 divisors, whose sum is σ = 1330498682. Its totient is φ = 1330498680.

The previous prime is 1330498649. The next prime is 1330498699. The reversal of 1330498681 is 1868940331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1137038400 + 193460281 = 33720^2 + 13909^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330498681 - 2⁵ = 1330498649 is a prime.

It is a super-2 number, since 2×1330498681² = 3540453480285479522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1330498381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665249340 + 665249341.

It is an arithmetic number, because the mean of its divisors is an integer number (665249341).

Almost surely, 2^1330498681 is an apocalyptic number.

It is an amenable number.

1330498681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330498681 is an equidigital number, since it uses as much as digits as its factorization.

1330498681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 1330498681 is about 36476.0014393025. The cubic root of 1330498681 is about 1099.8618782497.

The spelling of 1330498681 in words is "one billion, three hundred thirty million, four hundred ninety-eight thousand, six hundred eighty-one".