1840422144 has 144 divisors (see below), whose sum is σ = 5387526144. Its totient is φ = 553113600.

The previous prime is 1840422139. The next prime is 1840422161. The reversal of 1840422144 is 4412240481.

It is a congruent number.

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, 1105857 + ... + 1107519.

It is an arithmetic number, because the mean of its divisors is an integer number (37413376).

Almost surely, 2^1840422144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1840422144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2693763072).

1840422144 is an abundant number, since it is smaller than the sum of its proper divisors (3547104000).

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

1840422144 is a wasteful number, since it uses less digits than its factorization.

1840422144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824 (or 1810 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The square root of 1840422144 is about 42900.1415382281. The cubic root of 1840422144 is about 1225.4788396521.

The spelling of 1840422144 in words is "one billion, eight hundred forty million, four hundred twenty-two thousand, one hundred forty-four".