1298489473 has 2 divisors, whose sum is σ = 1298489474. Its totient is φ = 1298489472.

The previous prime is 1298489429. The next prime is 1298489477. The reversal of 1298489473 is 3749848921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1133803584 + 164685889 = 33672^2 + 12833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1298489473 is a prime.

It is a super-2 number, since 2×1298489473² = 3372149822983635458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1298489477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649244736 + 649244737.

It is an arithmetic number, because the mean of its divisors is an integer number (649244737).

Almost surely, 2^1298489473 is an apocalyptic number.

It is an amenable number.

1298489473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298489473 is an equidigital number, since it uses as much as digits as its factorization.

1298489473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 55.

The square root of 1298489473 is about 36034.5594256403. The cubic root of 1298489473 is about 1090.9700068179.

The spelling of 1298489473 in words is "one billion, two hundred ninety-eight million, four hundred eighty-nine thousand, four hundred seventy-three".