18445683630 has 64 divisors (see below), whose sum is σ = 49599433728. Its totient is φ = 4350821760.

The previous prime is 18445683629. The next prime is 18445683647. The reversal of 18445683630 is 3638654481.

It is a self number, because there is not a number n which added to its sum of digits gives 18445683630.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 743142 + ... + 767561.

It is an arithmetic number, because the mean of its divisors is an integer number (774991152).

Almost surely, 2^18445683630 is an apocalyptic number.

18445683630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18445683630 is an abundant number, since it is smaller than the sum of its proper divisors (31153750098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18445683630 is a wasteful number, since it uses less digits than its factorization.

18445683630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510761.

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 18445683630 in words is "eighteen billion, four hundred forty-five million, six hundred eighty-three thousand, six hundred thirty".