1630740225757 has 2 divisors, whose sum is σ = 1630740225758. Its totient is φ = 1630740225756.

The previous prime is 1630740225743. The next prime is 1630740225773. The reversal of 1630740225757 is 7575220470361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1216037713081 + 414702512676 = 1102741^2 + 643974^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630740225757 - 2¹⁵ = 1630740192989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1630740225757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630740225787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815370112878 + 815370112879.

It is an arithmetic number, because the mean of its divisors is an integer number (815370112879).

Almost surely, 2^{1630740225757} is an apocalyptic number.

It is an amenable number.

1630740225757 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630740225757 is an equidigital number, since it uses as much as digits as its factorization.

1630740225757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2469600, while the sum is 49.

The spelling of 1630740225757 in words is "one trillion, six hundred thirty billion, seven hundred forty million, two hundred twenty-five thousand, seven hundred fifty-seven".