18322497945397 has 8 divisors (see below), whose sum is σ = 18679129222112. Its totient is φ = 17967681586800.

The previous prime is 18322497945331. The next prime is 18322497945473. The reversal of 18322497945397 is 79354979422381.

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 18322497945397 - 2³⁹ = 17772742131509 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 (18322497945197) 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, 453709143 + ... + 453749524.

It is an arithmetic number, because the mean of its divisors is an integer number (2334891152764).

Almost surely, 2^{18322497945397} is an apocalyptic number.

It is an amenable number.

18322497945397 is a deficient number, since it is larger than the sum of its proper divisors (356631276715).

18322497945397 is an equidigital number, since it uses as much as digits as its factorization.

18322497945397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907459059.

The product of its digits is 823011840, while the sum is 73.

The spelling of 18322497945397 in words is "eighteen trillion, three hundred twenty-two billion, four hundred ninety-seven million, nine hundred forty-five thousand, three hundred ninety-seven".