18815006 has 16 divisors (see below), whose sum is σ = 32503680. Its totient is φ = 8001240.

The previous prime is 18814979. The next prime is 18815009. The reversal of 18815006 is 60051881.

It is a self number, because there is not a number n which added to its sum of digits gives 18815006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18815009) 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, 3296 + ... + 6963.

It is an arithmetic number, because the mean of its divisors is an integer number (2031480).

Almost surely, 2^18815006 is an apocalyptic number.

18815006 is a deficient number, since it is larger than the sum of its proper divisors (13688674).

18815006 is a wasteful number, since it uses less digits than its factorization.

18815006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10399.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 18815006 is about 4337.6267704818. The cubic root of 18815006 is about 265.9713067586.

Adding to 18815006 its reverse (60051881), we get a palindrome (78866887).

The spelling of 18815006 in words is "eighteen million, eight hundred fifteen thousand, six".