1797632630957 has 2 divisors, whose sum is σ = 1797632630958. Its totient is φ = 1797632630956.

The previous prime is 1797632630953. The next prime is 1797632630977. The reversal of 1797632630957 is 7590362367971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1088754512356 + 708878118601 = 1043434^2 + 841949^2 .

It is a cyclic number.

It is not a de Polignac number, because 1797632630957 - 2² = 1797632630953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1797632630893 and 1797632630902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1797632630953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 898816315478 + 898816315479.

It is an arithmetic number, because the mean of its divisors is an integer number (898816315479).

Almost surely, 2^{1797632630957} is an apocalyptic number.

It is an amenable number.

1797632630957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1797632630957 is an equidigital number, since it uses as much as digits as its factorization.

1797632630957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90016920, while the sum is 65.

The spelling of 1797632630957 in words is "one trillion, seven hundred ninety-seven billion, six hundred thirty-two million, six hundred thirty thousand, nine hundred fifty-seven".