18443600834 has 8 divisors (see below), whose sum is σ = 27666862848. Its totient is φ = 9221313220.

The previous prime is 18443600831. The next prime is 18443600839. The reversal of 18443600834 is 43800634481.

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

It is a junction number, because it is equal to n+sod(n) for n = 18443600791 and 18443600800.

It is not an unprimeable number, because it can be changed into a prime (18443600831) 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, 194282 + ... + 273189.

It is an arithmetic number, because the mean of its divisors is an integer number (3458357856).

Almost surely, 2^18443600834 is an apocalyptic number.

18443600834 is a deficient number, since it is larger than the sum of its proper divisors (9223262014).

18443600834 is a wasteful number, since it uses less digits than its factorization.

18443600834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487200.

The product of its (nonzero) digits is 221184, while the sum is 41.

The spelling of 18443600834 in words is "eighteen billion, four hundred forty-three million, six hundred thousand, eight hundred thirty-four".