2309823642 has 96 divisors (see below), whose sum is σ = 5654819520. Its totient is φ = 626330880.

The previous prime is 2309823623. The next prime is 2309823661. The reversal of 2309823642 is 2463289032.

It is an interprime number because it is at equal distance from previous prime (2309823623) and next prime (2309823661).

It is a self number, because there is not a number n which added to its sum of digits gives 2309823642.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 443409 + ... + 448587.

It is an arithmetic number, because the mean of its divisors is an integer number (58904370).

Almost surely, 2^2309823642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2309823642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2827409760).

2309823642 is an abundant number, since it is smaller than the sum of its proper divisors (3344995878).

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

2309823642 is a wasteful number, since it uses less digits than its factorization.

2309823642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5276 (or 5269 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 2309823642 is about 48060.6246526197. The cubic root of 2309823642 is about 1321.8827666585.

The spelling of 2309823642 in words is "two billion, three hundred nine million, eight hundred twenty-three thousand, six hundred forty-two".