18235212343 has 4 divisors (see below), whose sum is σ = 18235583728. Its totient is φ = 18234840960.

The previous prime is 18235212319. The next prime is 18235212353. The reversal of 18235212343 is 34321253281.

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 18235212343 - 2⁵ = 18235212311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18235212299 and 18235212308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18235212313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98346 + ... + 214807.

It is an arithmetic number, because the mean of its divisors is an integer number (4558895932).

Almost surely, 2^18235212343 is an apocalyptic number.

18235212343 is a deficient number, since it is larger than the sum of its proper divisors (371385).

18235212343 is an equidigital number, since it uses as much as digits as its factorization.

18235212343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371384.

The product of its digits is 34560, while the sum is 34.

The spelling of 18235212343 in words is "eighteen billion, two hundred thirty-five million, two hundred twelve thousand, three hundred forty-three".