2543764653 has 6 divisors (see below), whose sum is σ = 3674326734. Its totient is φ = 1695843096.

The previous prime is 2543764651. The next prime is 2543764693. The reversal of 2543764653 is 3564673452.

It can be written as a sum of positive squares in only one way, i.e., 1452981924 + 1090782729 = 38118^2 + 33027^2 .

It is not a de Polignac number, because 2543764653 - 2¹ = 2543764651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2543764599 and 2543764608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543764651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141320250 + ... + 141320267.

It is an arithmetic number, because the mean of its divisors is an integer number (612387789).

Almost surely, 2^2543764653 is an apocalyptic number.

It is an amenable number.

2543764653 is a deficient number, since it is larger than the sum of its proper divisors (1130562081).

2543764653 is a wasteful number, since it uses less digits than its factorization.

2543764653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282640523 (or 282640520 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 45.

The square root of 2543764653 is about 50435.7477688197. The cubic root of 2543764653 is about 1365.0827418346.

The spelling of 2543764653 in words is "two billion, five hundred forty-three million, seven hundred sixty-four thousand, six hundred fifty-three".