6463532137 has 4 divisors (see below), whose sum is σ = 6466770756. Its totient is φ = 6460293520.

The previous prime is 6463532111. The next prime is 6463532149. The reversal of 6463532137 is 7312353646.

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 3059859856 + 3403672281 = 55316^2 + 58341^2 .

It is a cyclic number.

It is not a de Polignac number, because 6463532137 - 2¹⁹ = 6463007849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6463532137.

It is not an unprimeable number, because it can be changed into a prime (6463532737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616314 + ... + 1620307.

It is an arithmetic number, because the mean of its divisors is an integer number (1616692689).

Almost surely, 2^6463532137 is an apocalyptic number.

It is an amenable number.

6463532137 is a deficient number, since it is larger than the sum of its proper divisors (3238619).

6463532137 is a wasteful number, since it uses less digits than its factorization.

6463532137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238618.

The product of its digits is 272160, while the sum is 40.

The square root of 6463532137 is about 80396.0952845348. The cubic root of 6463532137 is about 1862.7588589175.

The spelling of 6463532137 in words is "six billion, four hundred sixty-three million, five hundred thirty-two thousand, one hundred thirty-seven".