2549133643 has 4 divisors (see below), whose sum is σ = 2913295600. Its totient is φ = 2184971688.

The previous prime is 2549133619. The next prime is 2549133659. The reversal of 2549133643 is 3463319452.

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

It is a cyclic number.

It is not a de Polignac number, because 2549133643 - 2¹⁷ = 2549002571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2549133596 and 2549133605.

It is not an unprimeable number, because it can be changed into a prime (2549133673) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 182080968 + ... + 182080981.

It is an arithmetic number, because the mean of its divisors is an integer number (728323900).

Almost surely, 2^2549133643 is an apocalyptic number.

2549133643 is a deficient number, since it is larger than the sum of its proper divisors (364161957).

2549133643 is an equidigital number, since it uses as much as digits as its factorization.

2549133643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364161956.

The product of its digits is 233280, while the sum is 40.

The square root of 2549133643 is about 50488.9457505304. The cubic root of 2549133643 is about 1366.0424696703.

The spelling of 2549133643 in words is "two billion, five hundred forty-nine million, one hundred thirty-three thousand, six hundred forty-three".