16818634 has 16 divisors (see below), whose sum is σ = 28899648. Its totient is φ = 7191072.

The previous prime is 16818631. The next prime is 16818643. The reversal of 16818634 is 43681861.

It is a junction number, because it is equal to n+sod(n) for n = 16818593 and 16818602.

It is not an unprimeable number, because it can be changed into a prime (16818631) 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, 6174 + ... + 8470.

It is an arithmetic number, because the mean of its divisors is an integer number (1806228).

Almost surely, 2^16818634 is an apocalyptic number.

16818634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16818634 is a deficient number, since it is larger than the sum of its proper divisors (12081014).

16818634 is a wasteful number, since it uses less digits than its factorization.

16818634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829.

The product of its digits is 27648, while the sum is 37.

The square root of 16818634 is about 4101.0527916622. The cubic root of 16818634 is about 256.2104897243.

The spelling of 16818634 in words is "sixteen million, eight hundred eighteen thousand, six hundred thirty-four".