1632790657 has 2 divisors, whose sum is σ = 1632790658. Its totient is φ = 1632790656.

The previous prime is 1632790651. The next prime is 1632790667. The reversal of 1632790657 is 7560972361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1629252496 + 3538161 = 40364^2 + 1881^2 .

It is a cyclic number.

It is not a de Polignac number, because 1632790657 - 2¹¹ = 1632788609 is a prime.

It is not a weakly prime, because it can be changed into another prime (1632790651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 816395328 + 816395329.

It is an arithmetic number, because the mean of its divisors is an integer number (816395329).

Almost surely, 2^1632790657 is an apocalyptic number.

It is an amenable number.

1632790657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1632790657 is an equidigital number, since it uses as much as digits as its factorization.

1632790657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 476280, while the sum is 46.

The square root of 1632790657 is about 40407.8044070697. The cubic root of 1632790657 is about 1177.5431638981.

The spelling of 1632790657 in words is "one billion, six hundred thirty-two million, seven hundred ninety thousand, six hundred fifty-seven".