18696916 has 48 divisors (see below), whose sum is σ = 39118464. Its totient is φ = 7652736.

The previous prime is 18696913. The next prime is 18696917. The reversal of 18696916 is 61969681.

It is a super-2 number, since 2×18696916² = 699149335822112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18696913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63666 + ... + 63958.

It is an arithmetic number, because the mean of its divisors is an integer number (814968).

Almost surely, 2^18696916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18696916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19559232).

18696916 is an abundant number, since it is smaller than the sum of its proper divisors (20421548).

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

18696916 is a wasteful number, since it uses less digits than its factorization.

18696916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 398 counting only the distinct ones).

The product of its digits is 139968, while the sum is 46.

The square root of 18696916 is about 4323.9930619741. The cubic root of 18696916 is about 265.4136934666.

The spelling of 18696916 in words is "eighteen million, six hundred ninety-six thousand, nine hundred sixteen".