18801384641 has 8 divisors (see below), whose sum is σ = 20336844864. Its totient is φ = 17278667280.

The previous prime is 18801384619. The next prime is 18801384703. The reversal of 18801384641 is 14648310881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18801384641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18801384592 and 18801384601.

It is not an unprimeable number, because it can be changed into a prime (18801384601) 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, 3182645 + ... + 3188546.

It is an arithmetic number, because the mean of its divisors is an integer number (2542105608).

Almost surely, 2^18801384641 is an apocalyptic number.

It is an amenable number.

18801384641 is a deficient number, since it is larger than the sum of its proper divisors (1535460223).

18801384641 is a wasteful number, since it uses less digits than its factorization.

18801384641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6371431.

The product of its (nonzero) digits is 147456, while the sum is 44.

The spelling of 18801384641 in words is "eighteen billion, eight hundred one million, three hundred eighty-four thousand, six hundred forty-one".