8043646137 has 4 divisors (see below), whose sum is σ = 10724861520. Its totient is φ = 5362430756.

The previous prime is 8043646133. The next prime is 8043646153. The reversal of 8043646137 is 7316463408.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8043646137 - 2² = 8043646133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8043646133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340607687 + ... + 1340607692.

It is an arithmetic number, because the mean of its divisors is an integer number (2681215380).

Almost surely, 2^8043646137 is an apocalyptic number.

It is an amenable number.

8043646137 is a deficient number, since it is larger than the sum of its proper divisors (2681215383).

8043646137 is a wasteful number, since it uses less digits than its factorization.

8043646137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681215382.

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 8043646137 is about 89686.3765406988. The cubic root of 8043646137 is about 2003.6305835270.

The spelling of 8043646137 in words is "eight billion, forty-three million, six hundred forty-six thousand, one hundred thirty-seven".