17957791419 has 4 divisors (see below), whose sum is σ = 23943721896. Its totient is φ = 11971860944.

The previous prime is 17957791391. The next prime is 17957791429. The reversal of 17957791419 is 91419775971.

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

It is a cyclic number.

It is not a de Polignac number, because 17957791419 - 2¹³ = 17957783227 is a prime.

It is a super-2 number, since 2×17957791419² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (17957791429) 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 in 3 ways as a sum of consecutive naturals, for example, 2992965234 + ... + 2992965239.

It is an arithmetic number, because the mean of its divisors is an integer number (5985930474).

Almost surely, 2^17957791419 is an apocalyptic number.

17957791419 is a deficient number, since it is larger than the sum of its proper divisors (5985930477).

17957791419 is an equidigital number, since it uses as much as digits as its factorization.

17957791419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5985930476.

The product of its digits is 5000940, while the sum is 60.

The spelling of 17957791419 in words is "seventeen billion, nine hundred fifty-seven million, seven hundred ninety-one thousand, four hundred nineteen".