1868023872 has 168 divisors, whose sum is σ = 6290706240. Its totient is φ = 522501120.

The previous prime is 1868023841. The next prime is 1868023873. The reversal of 1868023872 is 2783208681.

It is not an unprimeable number, because it can be changed into a prime (1868023873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71029 + ... + 93707.

It is an arithmetic number, because the mean of its divisors is an integer number (37444680).

Almost surely, 2^1868023872 is an apocalyptic number.

1868023872 is a gapful number since it is divisible by the number (12) 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 1868023872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3145353120).

1868023872 is an abundant number, since it is smaller than the sum of its proper divisors (4422682368).

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

1868023872 is a wasteful number, since it uses less digits than its factorization.

1868023872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22721 (or 22708 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 1868023872 is about 43220.6417351709. The cubic root of 1868023872 is about 1231.5748378330.

The spelling of 1868023872 in words is "one billion, eight hundred sixty-eight million, twenty-three thousand, eight hundred seventy-two".