18748650420 has 72 divisors (see below), whose sum is σ = 58977251424. Its totient is φ = 4999638816.

The previous prime is 18748650373. The next prime is 18748650421. The reversal of 18748650420 is 2405684781.

18748650420 is a `hidden beast` number, since 1 + 87 + 48 + 6 + 504 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18748650421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1924014 + ... + 1933733.

It is an arithmetic number, because the mean of its divisors is an integer number (819128492).

Almost surely, 2^18748650420 is an apocalyptic number.

18748650420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18748650420 is an abundant number, since it is smaller than the sum of its proper divisors (40228601004).

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

18748650420 is a wasteful number, since it uses less digits than its factorization.

18748650420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3857771 (or 3857757 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 18748650420 in words is "eighteen billion, seven hundred forty-eight million, six hundred fifty thousand, four hundred twenty".