18620630 has 16 divisors (see below), whose sum is σ = 38305440. Its totient is φ = 6384192.

The previous prime is 18620617. The next prime is 18620647. The reversal of 18620630 is 3602681.

It is a self number, because there is not a number n which added to its sum of digits gives 18620630.

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, 132935 + ... + 133074.

It is an arithmetic number, because the mean of its divisors is an integer number (2394090).

Almost surely, 2^18620630 is an apocalyptic number.

18620630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18620630 is an abundant number, since it is smaller than the sum of its proper divisors (19684810).

18620630 is a wasteful number, since it uses less digits than its factorization.

18620630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266023.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 18620630 is about 4315.1628011003. The cubic root of 18620630 is about 265.0522265642.

The spelling of 18620630 in words is "eighteen million, six hundred twenty thousand, six hundred thirty".