1845166872 has 32 divisors (see below), whose sum is σ = 4761722880. Its totient is φ = 595214880.

The previous prime is 1845166861. The next prime is 1845166877. The reversal of 1845166872 is 2786615481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1845166877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1239288 + ... + 1240775.

It is an arithmetic number, because the mean of its divisors is an integer number (148803840).

Almost surely, 2^1845166872 is an apocalyptic number.

1845166872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1845166872 is an abundant number, since it is smaller than the sum of its proper divisors (2916556008).

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

1845166872 is a wasteful number, since it uses less digits than its factorization.

1845166872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480103 (or 2480099 counting only the distinct ones).

The product of its digits is 645120, while the sum is 48.

The square root of 1845166872 is about 42955.4056202476. The cubic root of 1845166872 is about 1226.5310573282.

The spelling of 1845166872 in words is "one billion, eight hundred forty-five million, one hundred sixty-six thousand, eight hundred seventy-two".