17923970479 has 4 divisors (see below), whose sum is σ = 17924238280. Its totient is φ = 17923702680.

The previous prime is 17923970461. The next prime is 17923970513. The reversal of 17923970479 is 97407932971.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 17923970479 - 2⁵ = 17923970447 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 (17923970429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63517 + ... + 199705.

It is an arithmetic number, because the mean of its divisors is an integer number (4481059570).

Almost surely, 2^17923970479 is an apocalyptic number.

17923970479 is a deficient number, since it is larger than the sum of its proper divisors (267801).

17923970479 is a wasteful number, since it uses less digits than its factorization.

17923970479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267800.

The product of its (nonzero) digits is 6001128, while the sum is 58.

The spelling of 17923970479 in words is "seventeen billion, nine hundred twenty-three million, nine hundred seventy thousand, four hundred seventy-nine".