6507871749 has 32 divisors (see below), whose sum is σ = 9989827200. Its totient is φ = 4184519040.

The previous prime is 6507871729. The next prime is 6507871751. The reversal of 6507871749 is 9471787056.

6507871749 is a `hidden beast` number, since 6 + 507 + 87 + 17 + 49 = 666.

It is not a de Polignac number, because 6507871749 - 2¹⁶ = 6507806213 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6507871695 and 6507871704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6507871729) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45889 + ... + 122969.

It is an arithmetic number, because the mean of its divisors is an integer number (312182100).

Almost surely, 2^6507871749 is an apocalyptic number.

It is an amenable number.

6507871749 is a deficient number, since it is larger than the sum of its proper divisors (3481955451).

6507871749 is a wasteful number, since it uses less digits than its factorization.

6507871749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77202 (or 77196 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 54.

The square root of 6507871749 is about 80671.3812265539. The cubic root of 6507871749 is about 1867.0086434926.

The spelling of 6507871749 in words is "six billion, five hundred seven million, eight hundred seventy-one thousand, seven hundred forty-nine".