1800037872 has 30 divisors (see below), whose sum is σ = 5037606392. Its totient is φ = 600012576.

The previous prime is 1800037867. The next prime is 1800037873. The reversal of 1800037872 is 2787300081.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1800037873) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6249988 + ... + 6250275.

Almost surely, 2^1800037872 is an apocalyptic number.

1800037872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1800037872 is an abundant number, since it is smaller than the sum of its proper divisors (3237568520).

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

1800037872 is a wasteful number, since it uses less digits than its factorization.

1800037872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12500277 (or 12500268 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 1800037872 is about 42426.8531946455. The cubic root of 1800037872 is about 1216.4489303568.

The spelling of 1800037872 in words is "one billion, eight hundred million, thirty-seven thousand, eight hundred seventy-two".