15892442794 has 4 divisors (see below), whose sum is σ = 23838664194. Its totient is φ = 7946221396.

The previous prime is 15892442791. The next prime is 15892442861. The reversal of 15892442794 is 49724429851.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15212015569 + 680427225 = 123337^2 + 26085^2 .

It is not an unprimeable number, because it can be changed into a prime (15892442791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3973110697 + ... + 3973110700.

Almost surely, 2^15892442794 is an apocalyptic number.

15892442794 is a deficient number, since it is larger than the sum of its proper divisors (7946221400).

15892442794 is an equidigital number, since it uses as much as digits as its factorization.

15892442794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7946221399.

The product of its digits is 5806080, while the sum is 55.

The spelling of 15892442794 in words is "fifteen billion, eight hundred ninety-two million, four hundred forty-two thousand, seven hundred ninety-four".