18935245809323 has 4 divisors (see below), whose sum is σ = 18985206880440. Its totient is φ = 18885284738208.

The previous prime is 18935245809307. The next prime is 18935245809331. The reversal of 18935245809323 is 32390854253981.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18935245809323 - 2⁴ = 18935245809307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18935245809373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24980534990 + ... + 24980535747.

It is an arithmetic number, because the mean of its divisors is an integer number (4746301720110).

Almost surely, 2^{18935245809323} is an apocalyptic number.

18935245809323 is a deficient number, since it is larger than the sum of its proper divisors (49961071117).

18935245809323 is an equidigital number, since it uses as much as digits as its factorization.

18935245809323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49961071116.

The product of its (nonzero) digits is 55987200, while the sum is 62.

The spelling of 18935245809323 in words is "eighteen trillion, nine hundred thirty-five billion, two hundred forty-five million, eight hundred nine thousand, three hundred twenty-three".