18390004382 has 8 divisors (see below), whose sum is σ = 27591972096. Its totient is φ = 9192680352.

The previous prime is 18390004379. The next prime is 18390004387. The reversal of 18390004382 is 28340009381.

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

It is a super-2 number, since 2×18390004382² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18390004387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1151003 + ... + 1166870.

It is an arithmetic number, because the mean of its divisors is an integer number (3448996512).

Almost surely, 2^18390004382 is an apocalyptic number.

18390004382 is a deficient number, since it is larger than the sum of its proper divisors (9201967714).

18390004382 is a wasteful number, since it uses less digits than its factorization.

18390004382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321842.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 18390004382 in words is "eighteen billion, three hundred ninety million, four thousand, three hundred eighty-two".