1297513963 has 2 divisors, whose sum is σ = 1297513964. Its totient is φ = 1297513962.

The previous prime is 1297513961. The next prime is 1297513991. The reversal of 1297513963 is 3693157921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1297513963 - 2¹ = 1297513961 is a prime.

Together with 1297513961, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1297513961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648756981 + 648756982.

It is an arithmetic number, because the mean of its divisors is an integer number (648756982).

Almost surely, 2^1297513963 is an apocalyptic number.

1297513963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297513963 is an equidigital number, since it uses as much as digits as its factorization.

1297513963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 306180, while the sum is 46.

The square root of 1297513963 is about 36021.0211265589. The cubic root of 1297513963 is about 1090.6967357604.

The spelling of 1297513963 in words is "one billion, two hundred ninety-seven million, five hundred thirteen thousand, nine hundred sixty-three".