1872845028 has 18 divisors (see below), whose sum is σ = 4734136134. Its totient is φ = 624281664.

The previous prime is 1872845017. The next prime is 1872845033. The reversal of 1872845028 is 8205482781.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1100116224 + 772728804 = 33168^2 + 27798^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26011701 + ... + 26011772.

It is an arithmetic number, because the mean of its divisors is an integer number (263007563).

Almost surely, 2^1872845028 is an apocalyptic number.

1872845028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1872845028 is an abundant number, since it is smaller than the sum of its proper divisors (2861291106).

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

1872845028 is a wasteful number, since it uses less digits than its factorization.

1872845028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52023483 (or 52023478 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The square root of 1872845028 is about 43276.3795620660. The cubic root of 1872845028 is about 1232.6334455803.

The spelling of 1872845028 in words is "one billion, eight hundred seventy-two million, eight hundred forty-five thousand, twenty-eight".