1850531328 has 120 divisors (see below), whose sum is σ = 5655160368. Its totient is φ = 580534272.

The previous prime is 1850531321. The next prime is 1850531341. The reversal of 1850531328 is 8231350581.

1850531328 is a `hidden beast` number, since 18 + 505 + 3 + 132 + 8 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1850531292 and 1850531301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1850531321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66525 + ... + 90147.

Almost surely, 2^1850531328 is an apocalyptic number.

1850531328 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 1850531328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2827580184).

1850531328 is an abundant number, since it is smaller than the sum of its proper divisors (3804629040).

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

1850531328 is a wasteful number, since it uses less digits than its factorization.

1850531328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23664 (or 23645 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 1850531328 is about 43017.8024543328. The cubic root of 1850531328 is about 1227.7185390506.

The spelling of 1850531328 in words is "one billion, eight hundred fifty million, five hundred thirty-one thousand, three hundred twenty-eight".