6531136634 has 8 divisors (see below), whose sum is σ = 10687314528. Its totient is φ = 2968698460.

The previous prime is 6531136621. The next prime is 6531136639. The reversal of 6531136634 is 4366311356.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (6531136639) 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, 148434902 + ... + 148434945.

It is an arithmetic number, because the mean of its divisors is an integer number (1335914316).

Almost surely, 2^6531136634 is an apocalyptic number.

6531136634 is a deficient number, since it is larger than the sum of its proper divisors (4156177894).

6531136634 is a wasteful number, since it uses less digits than its factorization.

6531136634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296869860.

The product of its digits is 116640, while the sum is 38.

The square root of 6531136634 is about 80815.4479910865. The cubic root of 6531136634 is about 1869.2307772597.

The spelling of 6531136634 in words is "six billion, five hundred thirty-one million, one hundred thirty-six thousand, six hundred thirty-four".