5671891909 has 8 divisors (see below), whose sum is σ = 5806449792. Its totient is φ = 5537454720.

The previous prime is 5671891903. The next prime is 5671891957. The reversal of 5671891909 is 9091981765.

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

It is a cyclic number.

It is not a de Polignac number, because 5671891909 - 2⁹ = 5671891397 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 5671891909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5671891903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68724 + ... + 126754.

It is an arithmetic number, because the mean of its divisors is an integer number (725806224).

Almost surely, 2^5671891909 is an apocalyptic number.

It is an amenable number.

5671891909 is a deficient number, since it is larger than the sum of its proper divisors (134557883).

5671891909 is a wasteful number, since it uses less digits than its factorization.

5671891909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60347.

The product of its (nonzero) digits is 1224720, while the sum is 55.

The square root of 5671891909 is about 75311.9639167642. The cubic root of 5671891909 is about 1783.3748946283.

The spelling of 5671891909 in words is "five billion, six hundred seventy-one million, eight hundred ninety-one thousand, nine hundred nine".