3843221501 has 24 divisors (see below), whose sum is σ = 4861692864. Its totient is φ = 2965564800.

The previous prime is 3843221483. The next prime is 3843221509. The reversal of 3843221501 is 1051223483.

It is a happy number.

It is not a de Polignac number, because 3843221501 - 2¹⁰ = 3843220477 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3843221509) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32426 + ... + 93476.

It is an arithmetic number, because the mean of its divisors is an integer number (202570536).

Almost surely, 2^3843221501 is an apocalyptic number.

It is an amenable number.

3843221501 is a deficient number, since it is larger than the sum of its proper divisors (1018471363).

3843221501 is a wasteful number, since it uses less digits than its factorization.

3843221501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61121 (or 61098 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 3843221501 is about 61993.7214643548. The cubic root of 3843221501 is about 1566.3848420530.

Adding to 3843221501 its reverse (1051223483), we get a palindrome (4894444984).

The spelling of 3843221501 in words is "three billion, eight hundred forty-three million, two hundred twenty-one thousand, five hundred one".