2271996537 has 4 divisors (see below), whose sum is σ = 3029328720. Its totient is φ = 1514664356.

The previous prime is 2271996499. The next prime is 2271996577. The reversal of 2271996537 is 7356991722.

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 2271996537 - 2⁶ = 2271996473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2271996537.

It is not an unprimeable number, because it can be changed into a prime (2271996577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378666087 + ... + 378666092.

It is an arithmetic number, because the mean of its divisors is an integer number (757332180).

Almost surely, 2^2271996537 is an apocalyptic number.

It is an amenable number.

2271996537 is a deficient number, since it is larger than the sum of its proper divisors (757332183).

2271996537 is an equidigital number, since it uses as much as digits as its factorization.

2271996537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757332182.

The product of its digits is 1428840, while the sum is 51.

The square root of 2271996537 is about 47665.4648251751. The cubic root of 2271996537 is about 1314.6270223662.

The spelling of 2271996537 in words is "two billion, two hundred seventy-one million, nine hundred ninety-six thousand, five hundred thirty-seven".