18069830 has 16 divisors (see below), whose sum is σ = 32815584. Its totient is φ = 7163520.

The previous prime is 18069823. The next prime is 18069841. The reversal of 18069830 is 3896081.

It is a Curzon number.

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, 6866 + ... + 9125.

It is an arithmetic number, because the mean of its divisors is an integer number (2050974).

Almost surely, 2^18069830 is an apocalyptic number.

18069830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18069830 is a deficient number, since it is larger than the sum of its proper divisors (14745754).

18069830 is a wasteful number, since it uses less digits than its factorization.

18069830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16111.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 18069830 is about 4250.8622654704. The cubic root of 18069830 is about 262.4126028023.

The spelling of 18069830 in words is "eighteen million, sixty-nine thousand, eight hundred thirty".