2271445947 has 12 divisors (see below), whose sum is σ = 3369653040. Its totient is φ = 1473370128.

The previous prime is 2271445933. The next prime is 2271445951. The reversal of 2271445947 is 7495441722.

It is not a de Polignac number, because 2271445947 - 2⁴ = 2271445931 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2271445997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3410247 + ... + 3410912.

It is an arithmetic number, because the mean of its divisors is an integer number (280804420).

Almost surely, 2^2271445947 is an apocalyptic number.

2271445947 is a deficient number, since it is larger than the sum of its proper divisors (1098207093).

2271445947 is a wasteful number, since it uses less digits than its factorization.

2271445947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6821202 (or 6821199 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 2271445947 is about 47659.6889100212. The cubic root of 2271445947 is about 1314.5208193039.

The spelling of 2271445947 in words is "two billion, two hundred seventy-one million, four hundred forty-five thousand, nine hundred forty-seven".