18689004379443 has 8 divisors (see below), whose sum is σ = 24918694172928. Its totient is φ = 12459325419464.

The previous prime is 18689004379391. The next prime is 18689004379471. The reversal of 18689004379443 is 34497340098681.

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 18689004379443 - 2¹³ = 18689004371251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18689104379443) 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, 3090730 + ... + 6850592.

It is an arithmetic number, because the mean of its divisors is an integer number (3114836771616).

Almost surely, 2^{18689004379443} is an apocalyptic number.

18689004379443 is a deficient number, since it is larger than the sum of its proper divisors (6229689793485).

18689004379443 is a wasteful number, since it uses less digits than its factorization.

18689004379443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5416753.

The product of its (nonzero) digits is 125411328, while the sum is 66.

The spelling of 18689004379443 in words is "eighteen trillion, six hundred eighty-nine billion, four million, three hundred seventy-nine thousand, four hundred forty-three".