1641533850 has 120 divisors (see below), whose sum is σ = 4975806528. Its totient is φ = 397936800.

The previous prime is 1641533849. The next prime is 1641533867. The reversal of 1641533850 is 583351461.

1641533850 is a `hidden beast` number, since 1 + 6 + 41 + 533 + 85 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 26127 + ... + 62973.

Almost surely, 2^1641533850 is an apocalyptic number.

1641533850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1641533850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2487903264).

1641533850 is an abundant number, since it is smaller than the sum of its proper divisors (3334272678).

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

1641533850 is a wasteful number, since it uses less digits than its factorization.

1641533850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36882 (or 36868 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1641533850 is about 40515.8468997009. The cubic root of 1641533850 is about 1179.6412416023.

The spelling of 1641533850 in words is "one billion, six hundred forty-one million, five hundred thirty-three thousand, eight hundred fifty".