2271893957 has 4 divisors (see below), whose sum is σ = 2405534796. Its totient is φ = 2138253120.

The previous prime is 2271893951. The next prime is 2271893989. The reversal of 2271893957 is 7593981722.

It is a happy number.

2271893957 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.

It can be written as a sum of positive squares in 2 ways, for example, as 1882778881 + 389115076 = 43391^2 + 19726^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2271893957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2271893899 and 2271893908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2271893951) 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, 66820394 + ... + 66820427.

It is an arithmetic number, because the mean of its divisors is an integer number (601383699).

Almost surely, 2^2271893957 is an apocalyptic number.

It is an amenable number.

2271893957 is a deficient number, since it is larger than the sum of its proper divisors (133640839).

2271893957 is a wasteful number, since it uses less digits than its factorization.

2271893957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133640838.

The product of its digits is 1905120, while the sum is 53.

The square root of 2271893957 is about 47664.3887719123. The cubic root of 2271893957 is about 1314.6072370559.

The spelling of 2271893957 in words is "two billion, two hundred seventy-one million, eight hundred ninety-three thousand, nine hundred fifty-seven".