18101673844 has 12 divisors (see below), whose sum is σ = 33345188800. Its totient is φ = 8574477048.

The previous prime is 18101673841. The next prime is 18101673857. The reversal of 18101673844 is 44837610181.

It is a self number, because there is not a number n which added to its sum of digits gives 18101673844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18101673841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119089884 + ... + 119090035.

Almost surely, 2^18101673844 is an apocalyptic number.

It is an amenable number.

18101673844 is a deficient number, since it is larger than the sum of its proper divisors (15243514956).

18101673844 is a wasteful number, since it uses less digits than its factorization.

18101673844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238179942 (or 238179940 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 18101673844 in words is "eighteen billion, one hundred one million, six hundred seventy-three thousand, eight hundred forty-four".