18329394693 has 8 divisors (see below), whose sum is σ = 24441953056. Its totient is φ = 12218216400.

The previous prime is 18329394667. The next prime is 18329394749. The reversal of 18329394693 is 39649392381.

It is a happy number.

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

It is not a de Polignac number, because 18329394693 - 2¹³ = 18329386501 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 (18329394793) 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, 313618 + ... + 367443.

It is an arithmetic number, because the mean of its divisors is an integer number (3055244132).

Almost surely, 2^18329394693 is an apocalyptic number.

It is an amenable number.

18329394693 is a deficient number, since it is larger than the sum of its proper divisors (6112558363).

18329394693 is an equidigital number, since it uses as much as digits as its factorization.

18329394693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690035.

The product of its digits is 7558272, while the sum is 57.

The spelling of 18329394693 in words is "eighteen billion, three hundred twenty-nine million, three hundred ninety-four thousand, six hundred ninety-three".