2272140538 has 4 divisors (see below), whose sum is σ = 3408210810. Its totient is φ = 1136070268.

The previous prime is 2272140527. The next prime is 2272140539. The reversal of 2272140538 is 8350412722.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8350412722 = 2 ⋅4175206361.

It can be written as a sum of positive squares in only one way, i.e., 1280709369 + 991431169 = 35787^2 + 31487^2 .

It is not an unprimeable number, because it can be changed into a prime (2272140539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568035133 + ... + 568035136.

Almost surely, 2^2272140538 is an apocalyptic number.

2272140538 is a deficient number, since it is larger than the sum of its proper divisors (1136070272).

2272140538 is a wasteful number, since it uses less digits than its factorization.

2272140538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136070271.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 2272140538 is about 47666.9753393269. The cubic root of 2272140538 is about 1314.6547958250.

The spelling of 2272140538 in words is "two billion, two hundred seventy-two million, one hundred forty thousand, five hundred thirty-eight".