17738791423 has 12 divisors (see below), whose sum is σ = 19634384448. Its totient is φ = 15969440960.

The previous prime is 17738791417. The next prime is 17738791453. The reversal of 17738791423 is 32419783771.

It is a de Polignac number, because none of the positive numbers 2^k-17738791423 is a prime.

It is a super-2 number, since 2×17738791423² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17738791453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 977263 + ... + 995248.

It is an arithmetic number, because the mean of its divisors is an integer number (1636198704).

Almost surely, 2^17738791423 is an apocalyptic number.

17738791423 is a deficient number, since it is larger than the sum of its proper divisors (1895593025).

17738791423 is a wasteful number, since it uses less digits than its factorization.

17738791423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972574 (or 1972551 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 52.

The spelling of 17738791423 in words is "seventeen billion, seven hundred thirty-eight million, seven hundred ninety-one thousand, four hundred twenty-three".