1298156963 has 2 divisors, whose sum is σ = 1298156964. Its totient is φ = 1298156962.

The previous prime is 1298156947. The next prime is 1298157017. The reversal of 1298156963 is 3696518921.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3696518921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1298156963 - 2⁴ = 1298156947 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1298156933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649078481 + 649078482.

It is an arithmetic number, because the mean of its divisors is an integer number (649078482).

Almost surely, 2^1298156963 is an apocalyptic number.

1298156963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298156963 is an equidigital number, since it uses as much as digits as its factorization.

1298156963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 50.

The square root of 1298156963 is about 36029.9453649322. The cubic root of 1298156963 is about 1090.8768756802.

The spelling of 1298156963 in words is "one billion, two hundred ninety-eight million, one hundred fifty-six thousand, nine hundred sixty-three".