2543345146 has 16 divisors (see below), whose sum is σ = 4148606376. Its totient is φ = 1164519936.

The previous prime is 2543345143. The next prime is 2543345159. The reversal of 2543345146 is 6415433452.

It can be written as a sum of positive squares in 4 ways, for example, as 2478944521 + 64400625 = 49789^2 + 8025^2 .

It is a super-2 number, since 2×2543345146² = 12937209063363522632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (2543345143) 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 7 ways as a sum of consecutive naturals, for example, 1009611 + ... + 1012126.

Almost surely, 2^2543345146 is an apocalyptic number.

2543345146 is a deficient number, since it is larger than the sum of its proper divisors (1605261230).

2543345146 is a wasteful number, since it uses less digits than its factorization.

2543345146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021793.

The product of its digits is 172800, while the sum is 37.

The square root of 2543345146 is about 50431.5887713247. The cubic root of 2543345146 is about 1365.0076964685.

Adding to 2543345146 its reverse (6415433452), we get a palindrome (8958778598).

The spelling of 2543345146 in words is "two billion, five hundred forty-three million, three hundred forty-five thousand, one hundred forty-six".