18940343082 has 16 divisors (see below), whose sum is σ = 37890538560. Its totient is φ = 6311805632.

The previous prime is 18940343069. The next prime is 18940343087. The reversal of 18940343082 is 28034304981.

It is not an unprimeable number, because it can be changed into a prime (18940343087) 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, 385407 + ... + 431762.

It is an arithmetic number, because the mean of its divisors is an integer number (2368158660).

Almost surely, 2^18940343082 is an apocalyptic number.

18940343082 is an abundant number, since it is smaller than the sum of its proper divisors (18950195478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18940343082 is a wasteful number, since it uses less digits than its factorization.

18940343082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821037.

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 18940343082 in words is "eighteen billion, nine hundred forty million, three hundred forty-three thousand, eighty-two".