18394696397 has 8 divisors (see below), whose sum is σ = 22933647552. Its totient is φ = 14333529600.

The previous prime is 18394696387. The next prime is 18394696403. The reversal of 18394696397 is 79369649381.

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

It is a cyclic number.

It is not a de Polignac number, because 18394696397 - 2¹⁶ = 18394630861 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 (18394696357) 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, 119446004 + ... + 119446157.

It is an arithmetic number, because the mean of its divisors is an integer number (2866705944).

Almost surely, 2^18394696397 is an apocalyptic number.

It is an amenable number.

18394696397 is a deficient number, since it is larger than the sum of its proper divisors (4538951155).

18394696397 is a wasteful number, since it uses less digits than its factorization.

18394696397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238892179.

The product of its digits is 52907904, while the sum is 65.

The spelling of 18394696397 in words is "eighteen billion, three hundred ninety-four million, six hundred ninety-six thousand, three hundred ninety-seven".