3821817850 has 12 divisors (see below), whose sum is σ = 7108581294. Its totient is φ = 1528727120.

The previous prime is 3821817817. The next prime is 3821817877. The reversal of 3821817850 is 587181283.

It can be written as a sum of positive squares in 3 ways, for example, as 3215230209 + 606587641 = 56703^2 + 24629^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3821817797 and 3821817806.

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, 38218129 + ... + 38218228.

Almost surely, 2^3821817850 is an apocalyptic number.

3821817850 is a deficient number, since it is larger than the sum of its proper divisors (3286763444).

3821817850 is a wasteful number, since it uses less digits than its factorization.

3821817850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76436369 (or 76436364 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 43.

The square root of 3821817850 is about 61820.8528734439. The cubic root of 3821817850 is about 1563.4715928395.

The spelling of 3821817850 in words is "three billion, eight hundred twenty-one million, eight hundred seventeen thousand, eight hundred fifty".