2145340226 has 16 divisors (see below), whose sum is σ = 3372732864. Its totient is φ = 1021507344.

The previous prime is 2145340199. The next prime is 2145340229. The reversal of 2145340226 is 6220435412.

It is not an unprimeable number, because it can be changed into a prime (2145340229) 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, 92285 + ... + 113168.

It is an arithmetic number, because the mean of its divisors is an integer number (210795804).

Almost surely, 2^2145340226 is an apocalyptic number.

2145340226 is a deficient number, since it is larger than the sum of its proper divisors (1227392638).

2145340226 is a wasteful number, since it uses less digits than its factorization.

2145340226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205705.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 2145340226 is about 46317.8175867560. The cubic root of 2145340226 is about 1289.7297725339.

Adding to 2145340226 its reverse (6220435412), we get a palindrome (8365775638).

The spelling of 2145340226 in words is "two billion, one hundred forty-five million, three hundred forty thousand, two hundred twenty-six".