2543397746 has 16 divisors (see below), whose sum is σ = 3857989824. Its totient is φ = 1257438864.

The previous prime is 2543397737. The next prime is 2543397751. The reversal of 2543397746 is 6477933452.

It is a junction number, because it is equal to n+sod(n) for n = 2543397694 and 2543397703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131660 + ... + 149736.

It is an arithmetic number, because the mean of its divisors is an integer number (241124364).

Almost surely, 2^2543397746 is an apocalyptic number.

2543397746 is a deficient number, since it is larger than the sum of its proper divisors (1314592078).

2543397746 is a wasteful number, since it uses less digits than its factorization.

2543397746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18865.

The product of its digits is 3810240, while the sum is 50.

The square root of 2543397746 is about 50432.1102671701. The cubic root of 2543397746 is about 1365.0171065047.

The spelling of 2543397746 in words is "two billion, five hundred forty-three million, three hundred ninety-seven thousand, seven hundred forty-six".