6536433149 has 4 divisors (see below), whose sum is σ = 6557316636. Its totient is φ = 6515549664.

The previous prime is 6536433083. The next prime is 6536433151. The reversal of 6536433149 is 9413346356.

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 270602500 + 6265830649 = 16450^2 + 79157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6536433149 is a prime.

It is a super-2 number, since 2×6536433149² = 85449916622692112402, which contains 22 as substring.

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 (6536430149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10441274 + ... + 10441899.

It is an arithmetic number, because the mean of its divisors is an integer number (1639329159).

Almost surely, 2^6536433149 is an apocalyptic number.

It is an amenable number.

6536433149 is a deficient number, since it is larger than the sum of its proper divisors (20883487).

6536433149 is a wasteful number, since it uses less digits than its factorization.

6536433149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20883486.

The product of its digits is 699840, while the sum is 44.

The square root of 6536433149 is about 80848.2105491519. The cubic root of 6536433149 is about 1869.7359335246.

The spelling of 6536433149 in words is "six billion, five hundred thirty-six million, four hundred thirty-three thousand, one hundred forty-nine".