2649542933 has 4 divisors (see below), whose sum is σ = 2650184460. Its totient is φ = 2648901408.

The previous prime is 2649542887. The next prime is 2649542947. The reversal of 2649542933 is 3392459462.

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

It can be written as a sum of positive squares in 2 ways, for example, as 903723844 + 1745819089 = 30062^2 + 41783^2 .

It is a cyclic number.

It is not a de Polignac number, because 2649542933 - 2¹⁴ = 2649526549 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 (2649542033) 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, 314528 + ... + 322841.

It is an arithmetic number, because the mean of its divisors is an integer number (662546115).

Almost surely, 2^2649542933 is an apocalyptic number.

It is an amenable number.

2649542933 is a deficient number, since it is larger than the sum of its proper divisors (641527).

2649542933 is an equidigital number, since it uses as much as digits as its factorization.

2649542933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641526.

The product of its digits is 1399680, while the sum is 47.

The square root of 2649542933 is about 51473.7110863400. The cubic root of 2649542933 is about 1383.7479390843.

The spelling of 2649542933 in words is "two billion, six hundred forty-nine million, five hundred forty-two thousand, nine hundred thirty-three".