15791493 has 16 divisors (see below), whose sum is σ = 21848576. Its totient is φ = 10134720.

The previous prime is 15791459. The next prime is 15791513. The reversal of 15791493 is 39419751.

It is a happy number.

It is not a de Polignac number, because 15791493 - 2¹³ = 15783301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15791393) 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 in 15 ways as a sum of consecutive naturals, for example, 25455 + ... + 26067.

It is an arithmetic number, because the mean of its divisors is an integer number (1365536).

Almost surely, 2^15791493 is an apocalyptic number.

It is an amenable number.

15791493 is a deficient number, since it is larger than the sum of its proper divisors (6057083).

15791493 is a wasteful number, since it uses less digits than its factorization.

15791493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924.

The product of its digits is 34020, while the sum is 39.

The square root of 15791493 is about 3973.8511547364. The cubic root of 15791493 is about 250.8848272946.

The spelling of 15791493 in words is "fifteen million, seven hundred ninety-one thousand, four hundred ninety-three".