4041351821 has 4 divisors (see below), whose sum is σ = 4352225052. Its totient is φ = 3730478592.

The previous prime is 4041351803. The next prime is 4041351829. The reversal of 4041351821 is 1281531404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1103169796 + 2938182025 = 33214^2 + 54205^2 .

It is a cyclic number.

It is not a de Polignac number, because 4041351821 - 2¹⁸ = 4041089677 is a prime.

It is a super-3 number, since 3×4041351821³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4041351829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155436596 + ... + 155436621.

It is an arithmetic number, because the mean of its divisors is an integer number (1088056263).

Almost surely, 2^4041351821 is an apocalyptic number.

It is an amenable number.

4041351821 is a deficient number, since it is larger than the sum of its proper divisors (310873231).

4041351821 is a wasteful number, since it uses less digits than its factorization.

4041351821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310873230.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 4041351821 is about 63571.6274842795. The cubic root of 4041351821 is about 1592.8524697450.

The spelling of 4041351821 in words is "four billion, forty-one million, three hundred fifty-one thousand, eight hundred twenty-one".