4165050821 has 8 divisors (see below), whose sum is σ = 4271819904. Its totient is φ = 4058732160.

The previous prime is 4165050809. The next prime is 4165050823. The reversal of 4165050821 is 1280505614.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4165050821 - 2¹⁰ = 4165049797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4165050823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93836 + ... + 130901.

It is an arithmetic number, because the mean of its divisors is an integer number (533977488).

Almost surely, 2^4165050821 is an apocalyptic number.

It is an amenable number.

4165050821 is a deficient number, since it is larger than the sum of its proper divisors (106769083).

4165050821 is a wasteful number, since it uses less digits than its factorization.

4165050821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225211.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 4165050821 is about 64537.2049363776. The cubic root of 4165050821 is about 1608.9409365361.

The spelling of 4165050821 in words is "four billion, one hundred sixty-five million, fifty thousand, eight hundred twenty-one".