18948969717 has 8 divisors (see below), whose sum is σ = 25271805120. Its totient is φ = 12629390400.

The previous prime is 18948969707. The next prime is 18948969719. The reversal of 18948969717 is 71796984981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18948969717 - 2²³ = 18940581109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18948969719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800409 + ... + 823742.

It is an arithmetic number, because the mean of its divisors is an integer number (3158975640).

Almost surely, 2^18948969717 is an apocalyptic number.

It is an amenable number.

18948969717 is a deficient number, since it is larger than the sum of its proper divisors (6322835403).

18948969717 is a wasteful number, since it uses less digits than its factorization.

18948969717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628043.

The product of its digits is 54867456, while the sum is 69.

The spelling of 18948969717 in words is "eighteen billion, nine hundred forty-eight million, nine hundred sixty-nine thousand, seven hundred seventeen".