1797818801 has 2 divisors, whose sum is σ = 1797818802. Its totient is φ = 1797818800.

The previous prime is 1797818797. The next prime is 1797818831. The reversal of 1797818801 is 1088187971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1370776576 + 427042225 = 37024^2 + 20665^2 .

It is a cyclic number.

It is not a de Polignac number, because 1797818801 - 2² = 1797818797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1797818801.

It is not a weakly prime, because it can be changed into another prime (1797818831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 898909400 + 898909401.

It is an arithmetic number, because the mean of its divisors is an integer number (898909401).

Almost surely, 2^1797818801 is an apocalyptic number.

It is an amenable number.

1797818801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1797818801 is an equidigital number, since it uses as much as digits as its factorization.

1797818801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 50.

The square root of 1797818801 is about 42400.6934023490. The cubic root of 1797818801 is about 1215.9488489221.

The spelling of 1797818801 in words is "one billion, seven hundred ninety-seven million, eight hundred eighteen thousand, eight hundred one".