20183840020 has 24 divisors (see below), whose sum is σ = 42400999368. Its totient is φ = 8070691200.

The previous prime is 20183839969. The next prime is 20183840023. The reversal of 20183840020 is 2004838102.

It can be written as a sum of positive squares in 4 ways, for example, as 1457559684 + 18726280336 = 38178^2 + 136844^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20183840023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119151 + ... + 233590.

It is an arithmetic number, because the mean of its divisors is an integer number (1766708307).

Almost surely, 2^20183840020 is an apocalyptic number.

20183840020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20183840020 is an abundant number, since it is smaller than the sum of its proper divisors (22217159348).

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

20183840020 is a wasteful number, since it uses less digits than its factorization.

20183840020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355611 (or 355609 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The spelling of 20183840020 in words is "twenty billion, one hundred eighty-three million, eight hundred forty thousand, twenty".