2321840990 has 24 divisors (see below), whose sum is σ = 4861651752. Its totient is φ = 796059600.

The previous prime is 2321840957. The next prime is 2321841023. The reversal of 2321840990 is 990481232.

It is an interprime number because it is at equal distance from previous prime (2321840957) and next prime (2321841023).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2368736 + ... + 2369715.

It is an arithmetic number, because the mean of its divisors is an integer number (202568823).

Almost surely, 2^2321840990 is an apocalyptic number.

2321840990 is an abundant number, since it is smaller than the sum of its proper divisors (2539810762).

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

2321840990 is a wasteful number, since it uses less digits than its factorization.

2321840990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738472 (or 4738465 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2321840990 is about 48185.4852626805. The cubic root of 2321840990 is about 1324.1712610431.

The spelling of 2321840990 in words is "two billion, three hundred twenty-one million, eight hundred forty thousand, nine hundred ninety".