2543704654 has 4 divisors (see below), whose sum is σ = 3815556984. Its totient is φ = 1271852326.

The previous prime is 2543704651. The next prime is 2543704663. The reversal of 2543704654 is 4564073452.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543704651) 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 as a sum of consecutive naturals, namely, 635926162 + ... + 635926165.

It is an arithmetic number, because the mean of its divisors is an integer number (953889246).

Almost surely, 2^2543704654 is an apocalyptic number.

2543704654 is a deficient number, since it is larger than the sum of its proper divisors (1271852330).

2543704654 is a wasteful number, since it uses less digits than its factorization.

2543704654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271852329.

The product of its (nonzero) digits is 403200, while the sum is 40.

The square root of 2543704654 is about 50435.1529590225. The cubic root of 2543704654 is about 1365.0720091536.

The spelling of 2543704654 in words is "two billion, five hundred forty-three million, seven hundred four thousand, six hundred fifty-four".