3801321641 has 4 divisors (see below), whose sum is σ = 4093731012. Its totient is φ = 3508912272.

The previous prime is 3801321617. The next prime is 3801321673. The reversal of 3801321641 is 1461231083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1461231083 = 13 ⋅112402391.

It can be written as a sum of positive squares in 2 ways, for example, as 148328041 + 3652993600 = 12179^2 + 60440^2 .

It is a cyclic number.

It is not a de Polignac number, because 3801321641 - 2²⁶ = 3734212777 is a prime.

It is a super-3 number, since 3×3801321641³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3801327641) 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, 146204666 + ... + 146204691.

It is an arithmetic number, because the mean of its divisors is an integer number (1023432753).

Almost surely, 2^3801321641 is an apocalyptic number.

It is an amenable number.

3801321641 is a deficient number, since it is larger than the sum of its proper divisors (292409371).

3801321641 is a wasteful number, since it uses less digits than its factorization.

3801321641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292409370.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 3801321641 is about 61654.8590218160. The cubic root of 3801321641 is about 1560.6716427693.

The spelling of 3801321641 in words is "three billion, eight hundred one million, three hundred twenty-one thousand, six hundred forty-one".