15892442861 has 2 divisors, whose sum is σ = 15892442862. Its totient is φ = 15892442860.

The previous prime is 15892442791. The next prime is 15892442869. The reversal of 15892442861 is 16824429851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12142717636 + 3749725225 = 110194^2 + 61235^2 .

It is a cyclic number.

It is not a de Polignac number, because 15892442861 - 2¹⁰ = 15892441837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15892442869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7946221430 + 7946221431.

It is an arithmetic number, because the mean of its divisors is an integer number (7946221431).

Almost surely, 2^15892442861 is an apocalyptic number.

It is an amenable number.

15892442861 is a deficient number, since it is larger than the sum of its proper divisors (1).

15892442861 is an equidigital number, since it uses as much as digits as its factorization.

15892442861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1105920, while the sum is 50.

The spelling of 15892442861 in words is "fifteen billion, eight hundred ninety-two million, four hundred forty-two thousand, eight hundred sixty-one".