1884273138 has 64 divisors (see below), whose sum is σ = 4623091200. Its totient is φ = 564097680.

The previous prime is 1884273107. The next prime is 1884273233. The reversal of 1884273138 is 8313724881.

It is a junction number, because it is equal to n+sod(n) for n = 1884273093 and 1884273102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30193 + ... + 68411.

It is an arithmetic number, because the mean of its divisors is an integer number (72235800).

Almost surely, 2^1884273138 is an apocalyptic number.

1884273138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1884273138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2311545600).

1884273138 is an abundant number, since it is smaller than the sum of its proper divisors (2738818062).

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

1884273138 is a wasteful number, since it uses less digits than its factorization.

1884273138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38324 (or 38318 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 1884273138 is about 43408.2150980664. The cubic root of 1884273138 is about 1235.1355417356.

The spelling of 1884273138 in words is "one billion, eight hundred eighty-four million, two hundred seventy-three thousand, one hundred thirty-eight".