18376944361 has 4 divisors (see below), whose sum is σ = 18486986112. Its totient is φ = 18266902612.

The previous prime is 18376944337. The next prime is 18376944389. The reversal of 18376944361 is 16344967381.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16344967381 = 41 ⋅398657741.

It is a cyclic number.

It is not a de Polignac number, because 18376944361 - 2⁵ = 18376944329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18376944299 and 18376944308.

It is not an unprimeable number, because it can be changed into a prime (18376944331) 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 3 ways as a sum of consecutive naturals, for example, 55020625 + ... + 55020958.

It is an arithmetic number, because the mean of its divisors is an integer number (4621746528).

Almost surely, 2^18376944361 is an apocalyptic number.

It is an amenable number.

18376944361 is a deficient number, since it is larger than the sum of its proper divisors (110041751).

18376944361 is a wasteful number, since it uses less digits than its factorization.

18376944361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110041750.

The product of its digits is 2612736, while the sum is 52.

The spelling of 18376944361 in words is "eighteen billion, three hundred seventy-six million, nine hundred forty-four thousand, three hundred sixty-one".