6499749082 has 4 divisors (see below), whose sum is σ = 9749623626. Its totient is φ = 3249874540.

The previous prime is 6499749049. The next prime is 6499749089. The reversal of 6499749082 is 2809479946.

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

It can be written as a sum of positive squares in only one way, i.e., 6179374881 + 320374201 = 78609^2 + 17899^2 .

It is not an unprimeable number, because it can be changed into a prime (6499749089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1624937269 + ... + 1624937272.

Almost surely, 2^6499749082 is an apocalyptic number.

6499749082 is a deficient number, since it is larger than the sum of its proper divisors (3249874544).

6499749082 is a wasteful number, since it uses less digits than its factorization.

6499749082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3249874543.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The square root of 6499749082 is about 80621.0213405908. The cubic root of 6499749082 is about 1866.2315638885.

The spelling of 6499749082 in words is "six billion, four hundred ninety-nine million, seven hundred forty-nine thousand, eighty-two".