1838922240 has 160 divisors (see below), whose sum is σ = 5921942400. Its totient is φ = 486785024.

The previous prime is 1838922221. The next prime is 1838922257. The reversal of 1838922240 is 422298381.

It is a tau number, because it is divible by the number of its divisors (160).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1143517 + ... + 1145123.

It is an arithmetic number, because the mean of its divisors is an integer number (37012140).

Almost surely, 2^1838922240 is an apocalyptic number.

1838922240 is a gapful number since it is divisible by the number (10) 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 1838922240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2960971200).

1838922240 is an abundant number, since it is smaller than the sum of its proper divisors (4083020160).

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

1838922240 is a wasteful number, since it uses less digits than its factorization.

1838922240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782 (or 1766 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 1838922240 is about 42882.6566341219. The cubic root of 1838922240 is about 1225.1458363096.

It can be divided in two parts, 1 and 838922240, that added together give a triangular number (838922241 = T₄₀₉₆₁).

The spelling of 1838922240 in words is "one billion, eight hundred thirty-eight million, nine hundred twenty-two thousand, two hundred forty".