1590994037861 has 2 divisors, whose sum is σ = 1590994037862. Its totient is φ = 1590994037860.

The previous prime is 1590994037851. The next prime is 1590994037891. The reversal of 1590994037861 is 1687304990951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 994537480225 + 596456557636 = 997265^2 + 772306^2 .

It is a cyclic number.

It is not a de Polignac number, because 1590994037861 - 2⁶ = 1590994037797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1590994037794 and 1590994037803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1590994037851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 795497018930 + 795497018931.

It is an arithmetic number, because the mean of its divisors is an integer number (795497018931).

Almost surely, 2^{1590994037861} is an apocalyptic number.

It is an amenable number.

1590994037861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1590994037861 is an equidigital number, since it uses as much as digits as its factorization.

1590994037861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 1590994037861 in words is "one trillion, five hundred ninety billion, nine hundred ninety-four million, thirty-seven thousand, eight hundred sixty-one".