1843340664 has 64 divisors (see below), whose sum is σ = 5079191040. Its totient is φ = 552821760.

The previous prime is 1843340647. The next prime is 1843340713. The reversal of 1843340664 is 4660433481.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10384 + ... + 61599.

It is an arithmetic number, because the mean of its divisors is an integer number (79362360).

Almost surely, 2^1843340664 is an apocalyptic number.

It is an amenable number.

1843340664 is an abundant number, since it is smaller than the sum of its proper divisors (3235850376).

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

1843340664 is a wasteful number, since it uses less digits than its factorization.

1843340664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72100 (or 72096 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 39.

The square root of 1843340664 is about 42934.1433360443. The cubic root of 1843340664 is about 1226.1262808945.

The spelling of 1843340664 in words is "one billion, eight hundred forty-three million, three hundred forty thousand, six hundred sixty-four".