1361597801 has 2 divisors, whose sum is σ = 1361597802. Its totient is φ = 1361597800.

The previous prime is 1361597777. The next prime is 1361597833. The reversal of 1361597801 is 1087951631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1345789225 + 15808576 = 36685^2 + 3976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1361597801 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1361591801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680798900 + 680798901.

It is an arithmetic number, because the mean of its divisors is an integer number (680798901).

Almost surely, 2^1361597801 is an apocalyptic number.

It is an amenable number.

1361597801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361597801 is an equidigital number, since it uses as much as digits as its factorization.

1361597801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 1361597801 is about 36899.8347015268. The cubic root of 1361597801 is about 1108.3653674022.

The spelling of 1361597801 in words is "one billion, three hundred sixty-one million, five hundred ninety-seven thousand, eight hundred one".