2020181838 has 16 divisors (see below), whose sum is σ = 4091508480. Its totient is φ = 664869816.

The previous prime is 2020181837. The next prime is 2020181857. The reversal of 2020181838 is 8381810202.

It is a super-2 number, since 2×2020181838² = 8162269317170116488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2020181799 and 2020181808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020181831) 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, 2130520 + ... + 2131467.

It is an arithmetic number, because the mean of its divisors is an integer number (255719280).

Almost surely, 2^2020181838 is an apocalyptic number.

2020181838 is an abundant number, since it is smaller than the sum of its proper divisors (2071326642).

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

2020181838 is a wasteful number, since it uses less digits than its factorization.

2020181838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4262071.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 2020181838 is about 44946.4329841646. The cubic root of 2020181838 is about 1264.1447948578.

The spelling of 2020181838 in words is "two billion, twenty million, one hundred eighty-one thousand, eight hundred thirty-eight".