18390001683889 has 8 divisors (see below), whose sum is σ = 20145064088160. Its totient is φ = 16648813291200.

The previous prime is 18390001683881. The next prime is 18390001683923. The reversal of 18390001683889 is 98838610009381.

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

It is a cyclic number.

It is not a de Polignac number, because 18390001683889 - 2³ = 18390001683881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18390001683889.

It is not an unprimeable number, because it can be changed into a prime (18390001683881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3468500119 + ... + 3468505420.

It is an arithmetic number, because the mean of its divisors is an integer number (2518133011020).

Almost surely, 2^{18390001683889} is an apocalyptic number.

It is an amenable number.

18390001683889 is a deficient number, since it is larger than the sum of its proper divisors (1755062404271).

18390001683889 is a wasteful number, since it uses less digits than its factorization.

18390001683889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6937005791.

The product of its (nonzero) digits is 17915904, while the sum is 64.

The spelling of 18390001683889 in words is "eighteen trillion, three hundred ninety billion, one million, six hundred eighty-three thousand, eight hundred eighty-nine".