18073630 has 32 divisors (see below), whose sum is σ = 34214400. Its totient is φ = 6860832.

The previous prime is 18073619. The next prime is 18073637. The reversal of 18073630 is 3637081.

It is a super-2 number, since 2×18073630² = 653312202753800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18073637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40951 + ... + 41389.

It is an arithmetic number, because the mean of its divisors is an integer number (1069200).

Almost surely, 2^18073630 is an apocalyptic number.

18073630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18073630 is a deficient number, since it is larger than the sum of its proper divisors (16140770).

18073630 is a wasteful number, since it uses less digits than its factorization.

18073630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 18073630 is about 4251.3092101140. The cubic root of 18073630 is about 262.4309962238.

The spelling of 18073630 in words is "eighteen million, seventy-three thousand, six hundred thirty".