18401016 has 32 divisors (see below), whose sum is σ = 46760400. Its totient is φ = 6032640.

The previous prime is 18400981. The next prime is 18401023. The reversal of 18401016 is 61010481.

It is a junction number, because it is equal to n+sod(n) for n = 18400983 and 18401001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4821 + ... + 7748.

Almost surely, 2^18401016 is an apocalyptic number.

It is an amenable number.

18401016 is an abundant number, since it is smaller than the sum of its proper divisors (28359384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18401016 is a wasteful number, since it uses less digits than its factorization.

18401016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12639 (or 12635 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 18401016 is about 4289.6405443813. The cubic root of 18401016 is about 264.0060834227.

Adding to 18401016 its reverse (61010481), we get a palindrome (79411497).

The spelling of 18401016 in words is "eighteen million, four hundred one thousand, sixteen".