1899612828 has 72 divisors (see below), whose sum is σ = 4881938880. Its totient is φ = 622702080.

The previous prime is 1899612821. The next prime is 1899612853. The reversal of 1899612828 is 8282169981.

1899612828 is a `hidden beast` number, since 18 + 9 + 9 + 612 + 8 + 2 + 8 = 666.

1899612828 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1899612821) 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, 797976 + ... + 800352.

Almost surely, 2^1899612828 is an apocalyptic number.

1899612828 is a gapful number since it is divisible by the number (18) 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 1899612828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2440969440).

1899612828 is an abundant number, since it is smaller than the sum of its proper divisors (2982326052).

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

1899612828 is a wasteful number, since it uses less digits than its factorization.

1899612828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747 (or 2742 counting only the distinct ones).

The product of its digits is 995328, while the sum is 54.

The square root of 1899612828 is about 43584.5480417085. The cubic root of 1899612828 is about 1238.4781946775.

The spelling of 1899612828 in words is "one billion, eight hundred ninety-nine million, six hundred twelve thousand, eight hundred twenty-eight".