1663004633 has 2 divisors, whose sum is σ = 1663004634. Its totient is φ = 1663004632.

The previous prime is 1663004591. The next prime is 1663004653. The reversal of 1663004633 is 3364003661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 838855369 + 824149264 = 28963^2 + 28708^2 .

It is a cyclic number.

It is not a de Polignac number, because 1663004633 - 2⁸ = 1663004377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1663004633.

It is not a weakly prime, because it can be changed into another prime (1663004653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831502316 + 831502317.

It is an arithmetic number, because the mean of its divisors is an integer number (831502317).

Almost surely, 2^1663004633 is an apocalyptic number.

It is an amenable number.

1663004633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663004633 is an equidigital number, since it uses as much as digits as its factorization.

1663004633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 1663004633 is about 40779.9538131175. The cubic root of 1663004633 is about 1184.7621005214.

The spelling of 1663004633 in words is "one billion, six hundred sixty-three million, four thousand, six hundred thirty-three".