2543689029 has 28 divisors (see below), whose sum is σ = 3957393824. Its totient is φ = 1453334904.

The previous prime is 2543689013. The next prime is 2543689033. The reversal of 2543689029 is 9209863452.

It is a happy number.

It is not a de Polignac number, because 2543689029 - 2⁴ = 2543689013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543689009) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 349344 + ... + 356550.

Almost surely, 2^2543689029 is an apocalyptic number.

It is an amenable number.

2543689029 is a deficient number, since it is larger than the sum of its proper divisors (1413704795).

2543689029 is an frugal number, since it uses more digits than its factorization.

2543689029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7252 (or 7217 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The square root of 2543689029 is about 50434.9980569049. The cubic root of 2543689029 is about 1365.0692141103.

The spelling of 2543689029 in words is "two billion, five hundred forty-three million, six hundred eighty-nine thousand, twenty-nine".