1630964791 has 2 divisors, whose sum is σ = 1630964792. Its totient is φ = 1630964790.

The previous prime is 1630964779. The next prime is 1630964831. The reversal of 1630964791 is 1974690361.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1630964791 - 2⁷ = 1630964663 is a prime.

It is a super-2 number, since 2×1630964791² = 5320092298963347362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630964761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815482395 + 815482396.

It is an arithmetic number, because the mean of its divisors is an integer number (815482396).

Almost surely, 2^1630964791 is an apocalyptic number.

1630964791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630964791 is an equidigital number, since it uses as much as digits as its factorization.

1630964791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 1630964791 is about 40385.2051003830. The cubic root of 1630964791 is about 1177.1040714889.

The spelling of 1630964791 in words is "one billion, six hundred thirty million, nine hundred sixty-four thousand, seven hundred ninety-one".