2271878143 has 8 divisors (see below), whose sum is σ = 2328623280. Its totient is φ = 2215804800.

The previous prime is 2271878137. The next prime is 2271878173. The reversal of 2271878143 is 3418781722.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2271878143 - 2²¹ = 2269780991 is a prime.

It is a super-2 number, since 2×2271878143² = 10322860593282256898, which contains 22 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 2271878143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2271878123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161098 + ... + 174631.

It is an arithmetic number, because the mean of its divisors is an integer number (291077910).

Almost surely, 2^2271878143 is an apocalyptic number.

2271878143 is a deficient number, since it is larger than the sum of its proper divisors (56745137).

2271878143 is a wasteful number, since it uses less digits than its factorization.

2271878143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335897.

The product of its digits is 150528, while the sum is 43.

The square root of 2271878143 is about 47664.2228825772. Note that the first 3 decimals coincide. The cubic root of 2271878143 is about 1314.6041868480.

The spelling of 2271878143 in words is "two billion, two hundred seventy-one million, eight hundred seventy-eight thousand, one hundred forty-three".