1901716992601 has 2 divisors, whose sum is σ = 1901716992602. Its totient is φ = 1901716992600.

The previous prime is 1901716992557. The next prime is 1901716992629. The reversal of 1901716992601 is 1062996171091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1901089440000 + 627552601 = 1378800^2 + 25051^2 .

It is an emirp because it is prime and its reverse (1062996171091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1901716992601 - 2¹⁹ = 1901716468313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1901716932601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950858496300 + 950858496301.

It is an arithmetic number, because the mean of its divisors is an integer number (950858496301).

Almost surely, 2^{1901716992601} is an apocalyptic number.

It is an amenable number.

1901716992601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1901716992601 is an equidigital number, since it uses as much as digits as its factorization.

1901716992601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 52.

The spelling of 1901716992601 in words is "one trillion, nine hundred one billion, seven hundred sixteen million, nine hundred ninety-two thousand, six hundred one".