2231819641 has 4 divisors (see below), whose sum is σ = 2249393152. Its totient is φ = 2214246132.

The previous prime is 2231819617. The next prime is 2231819663. The reversal of 2231819641 is 1469181322.

2231819641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2231819641 - 2⁹ = 2231819129 is a prime.

It is a super-3 number, since 3×2231819641³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2231819641.

It is not an unprimeable number, because it can be changed into a prime (2231879641) 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, 8786565 + ... + 8786818.

It is an arithmetic number, because the mean of its divisors is an integer number (562348288).

Almost surely, 2^2231819641 is an apocalyptic number.

It is an amenable number.

2231819641 is a deficient number, since it is larger than the sum of its proper divisors (17573511).

2231819641 is a wasteful number, since it uses less digits than its factorization.

2231819641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17573510.

The product of its digits is 20736, while the sum is 37.

The square root of 2231819641 is about 47242.1384041832. The cubic root of 2231819641 is about 1306.8318135691.

The spelling of 2231819641 in words is "two billion, two hundred thirty-one million, eight hundred nineteen thousand, six hundred forty-one".