16918004 has 12 divisors (see below), whose sum is σ = 29666784. Its totient is φ = 8441784.

The previous prime is 16918003. The next prime is 16918007. The reversal of 16918004 is 40081961.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16918003) 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, 1952 + ... + 6135.

It is an arithmetic number, because the mean of its divisors is an integer number (2472232).

Almost surely, 2^16918004 is an apocalyptic number.

It is an amenable number.

16918004 is a deficient number, since it is larger than the sum of its proper divisors (12748780).

16918004 is a wasteful number, since it uses less digits than its factorization.

16918004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8614 (or 8612 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 16918004 is about 4113.1501309823. The cubic root of 16918004 is about 256.7140910476.

Adding to 16918004 its reverse (40081961), we get a palindrome (56999965).

The spelling of 16918004 in words is "sixteen million, nine hundred eighteen thousand, four".