18044190913387 has 2 divisors, whose sum is σ = 18044190913388. Its totient is φ = 18044190913386.

The previous prime is 18044190913379. The next prime is 18044190913471. The reversal of 18044190913387 is 78331909144081.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (78331909144081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18044190913387 - 2³ = 18044190913379 is a prime.

It is not a weakly prime, because it can be changed into another prime (18044190913337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9022095456693 + 9022095456694.

It is an arithmetic number, because the mean of its divisors is an integer number (9022095456694).

Almost surely, 2^{18044190913387} is an apocalyptic number.

18044190913387 is a deficient number, since it is larger than the sum of its proper divisors (1).

18044190913387 is an equidigital number, since it uses as much as digits as its factorization.

18044190913387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The spelling of 18044190913387 in words is "eighteen trillion, forty-four billion, one hundred ninety million, nine hundred thirteen thousand, three hundred eighty-seven".