1872021768 has 16 divisors (see below), whose sum is σ = 4680054480. Its totient is φ = 624007248.

The previous prime is 1872021763. The next prime is 1872021779. The reversal of 1872021768 is 8671202781.

It is not an unprimeable number, because it can be changed into a prime (1872021761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39000430 + ... + 39000477.

It is an arithmetic number, because the mean of its divisors is an integer number (292503405).

Almost surely, 2^1872021768 is an apocalyptic number.

It is an amenable number.

1872021768 is an abundant number, since it is smaller than the sum of its proper divisors (2808032712).

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

1872021768 is a wasteful number, since it uses less digits than its factorization.

1872021768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78000916 (or 78000912 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 42.

The square root of 1872021768 is about 43266.8668613756. The cubic root of 1872021768 is about 1232.4528065841.

The spelling of 1872021768 in words is "one billion, eight hundred seventy-two million, twenty-one thousand, seven hundred sixty-eight".