2272743643 has 4 divisors (see below), whose sum is σ = 2371558608. Its totient is φ = 2173928680.

The previous prime is 2272743623. The next prime is 2272743647. The reversal of 2272743643 is 3463472722.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2272743643 - 2¹⁷ = 2272612571 is a prime.

It is a super-2 number, since 2×2272743643² = 10330727333593822898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2272743596 and 2272743605.

It is not an unprimeable number, because it can be changed into a prime (2272743647) 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, 49407448 + ... + 49407493.

It is an arithmetic number, because the mean of its divisors is an integer number (592889652).

Almost surely, 2^2272743643 is an apocalyptic number.

2272743643 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2272743643 is a deficient number, since it is larger than the sum of its proper divisors (98814965).

2272743643 is an equidigital number, since it uses as much as digits as its factorization.

2272743643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98814964.

The product of its digits is 338688, while the sum is 40.

The square root of 2272743643 is about 47673.3011548393. The cubic root of 2272743643 is about 1314.7711038798.

The spelling of 2272743643 in words is "two billion, two hundred seventy-two million, seven hundred forty-three thousand, six hundred forty-three".