1838520220 has 12 divisors (see below), whose sum is σ = 3860892504. Its totient is φ = 735408080.

The previous prime is 1838520217. The next prime is 1838520239. The reversal of 1838520220 is 220258381.

1838520220 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45962986 + ... + 45963025.

It is an arithmetic number, because the mean of its divisors is an integer number (321741042).

Almost surely, 2^1838520220 is an apocalyptic number.

1838520220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1838520220 is an abundant number, since it is smaller than the sum of its proper divisors (2022372284).

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

1838520220 is a wasteful number, since it uses less digits than its factorization.

1838520220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91926020 (or 91926018 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 1838520220 is about 42877.9689351070. The cubic root of 1838520220 is about 1225.0565504923.

The spelling of 1838520220 in words is "one billion, eight hundred thirty-eight million, five hundred twenty thousand, two hundred twenty".