1838193856 has 56 divisors (see below), whose sum is σ = 3929140224. Its totient is φ = 850755840.

The previous prime is 1838193823. The next prime is 1838193899. The reversal of 1838193856 is 6583918381.

It is a super-2 number, since 2×1838193856² = 6757913304472297472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25491 + ... + 65773.

Almost surely, 2^1838193856 is an apocalyptic number.

1838193856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1838193856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1964570112).

1838193856 is an abundant number, since it is smaller than the sum of its proper divisors (2090946368).

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

1838193856 is a wasteful number, since it uses less digits than its factorization.

1838193856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40349 (or 40339 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 52.

The square root of 1838193856 is about 42874.1630355626. The cubic root of 1838193856 is about 1224.9840577684.

The spelling of 1838193856 in words is "one billion, eight hundred thirty-eight million, one hundred ninety-three thousand, eight hundred fifty-six".