18916200481 has 8 divisors (see below), whose sum is σ = 19913110400. Its totient is φ = 17919422640.

The previous prime is 18916200473. The next prime is 18916200503. The reversal of 18916200481 is 18400261981.

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

It is a cyclic number.

It is not a de Polignac number, because 18916200481 - 2³ = 18916200473 is a prime.

It is a super-2 number, since 2×18916200481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18916230481) 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, 421555 + ... + 464263.

It is an arithmetic number, because the mean of its divisors is an integer number (2489138800).

Almost surely, 2^18916200481 is an apocalyptic number.

It is an amenable number.

18916200481 is a deficient number, since it is larger than the sum of its proper divisors (996909919).

18916200481 is a wasteful number, since it uses less digits than its factorization.

18916200481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66039.

The product of its (nonzero) digits is 27648, while the sum is 40.

The spelling of 18916200481 in words is "eighteen billion, nine hundred sixteen million, two hundred thousand, four hundred eighty-one".