18500042343 has 8 divisors (see below), whose sum is σ = 24723691888. Its totient is φ = 12304877184.

The previous prime is 18500042339. The next prime is 18500042401. The reversal of 18500042343 is 34324000581.

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

It is not a de Polignac number, because 18500042343 - 2² = 18500042339 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18500042343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18500049343) 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, 7119580 + ... + 7122177.

It is an arithmetic number, because the mean of its divisors is an integer number (3090461486).

Almost surely, 2^18500042343 is an apocalyptic number.

18500042343 is a deficient number, since it is larger than the sum of its proper divisors (6223649545).

18500042343 is a wasteful number, since it uses less digits than its factorization.

18500042343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14242193.

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 18500042343 in words is "eighteen billion, five hundred million, forty-two thousand, three hundred forty-three".