18220039570 has 16 divisors (see below), whose sum is σ = 33351937920. Its totient is φ = 7164489904.

The previous prime is 18220039517. The next prime is 18220039577. The reversal of 18220039570 is 7593002281.

It is not an unprimeable number, because it can be changed into a prime (18220039577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15440122 + ... + 15441301.

It is an arithmetic number, because the mean of its divisors is an integer number (2084496120).

Almost surely, 2^18220039570 is an apocalyptic number.

18220039570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18220039570 is a deficient number, since it is larger than the sum of its proper divisors (15131898350).

18220039570 is a wasteful number, since it uses less digits than its factorization.

18220039570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30881489.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 18220039570 in words is "eighteen billion, two hundred twenty million, thirty-nine thousand, five hundred seventy".