18490626117943 has 32 divisors (see below), whose sum is σ = 21787496294400. Its totient is φ = 15365078251776.

The previous prime is 18490626117937. The next prime is 18490626118001. The reversal of 18490626117943 is 34971162609481.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18490626117943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18490626112943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 264763753 + ... + 264833581.

It is an arithmetic number, because the mean of its divisors is an integer number (680859259200).

Almost surely, 2^{18490626117943} is an apocalyptic number.

18490626117943 is a deficient number, since it is larger than the sum of its proper divisors (3296870176457).

18490626117943 is an equidigital number, since it uses as much as digits as its factorization.

18490626117943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78751.

The product of its (nonzero) digits is 15676416, while the sum is 61.

The spelling of 18490626117943 in words is "eighteen trillion, four hundred ninety billion, six hundred twenty-six million, one hundred seventeen thousand, nine hundred forty-three".