18473343782 has 16 divisors (see below), whose sum is σ = 27877856832. Its totient is φ = 9180754560.

The previous prime is 18473343773. The next prime is 18473343787. The reversal of 18473343782 is 28734337481.

It is a self number, because there is not a number n which added to its sum of digits gives 18473343782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18473343787) 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, 2281982 + ... + 2290062.

It is an arithmetic number, because the mean of its divisors is an integer number (1742366052).

Almost surely, 2^18473343782 is an apocalyptic number.

18473343782 is a deficient number, since it is larger than the sum of its proper divisors (9404513050).

18473343782 is a wasteful number, since it uses less digits than its factorization.

18473343782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14863.

The product of its digits is 2709504, while the sum is 50.

The spelling of 18473343782 in words is "eighteen billion, four hundred seventy-three million, three hundred forty-three thousand, seven hundred eighty-two".