1290617473 has 2 divisors, whose sum is σ = 1290617474. Its totient is φ = 1290617472.

The previous prime is 1290617453. The next prime is 1290617477. The reversal of 1290617473 is 3747160921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1195223184 + 95394289 = 34572^2 + 9767^2 .

It is a cyclic number.

It is not a de Polignac number, because 1290617473 - 2⁹ = 1290616961 is a prime.

It is a super-2 number, since 2×1290617473² = 3331386923225811458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1290617477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645308736 + 645308737.

It is an arithmetic number, because the mean of its divisors is an integer number (645308737).

Almost surely, 2^1290617473 is an apocalyptic number.

It is an amenable number.

1290617473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290617473 is an equidigital number, since it uses as much as digits as its factorization.

1290617473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 1290617473 is about 35925.1648987169. The cubic root of 1290617473 is about 1088.7608939195.

The spelling of 1290617473 in words is "one billion, two hundred ninety million, six hundred seventeen thousand, four hundred seventy-three".