671838541 has 8 divisors (see below), whose sum is σ = 756557568. Its totient is φ = 591060000.

The previous prime is 671838469. The next prime is 671838553. The reversal of 671838541 is 145838176.

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 671838541 - 2¹⁵ = 671805773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671838571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 984760 + ... + 985441.

It is an arithmetic number, because the mean of its divisors is an integer number (94569696).

Almost surely, 2^671838541 is an apocalyptic number.

It is an amenable number.

671838541 is a deficient number, since it is larger than the sum of its proper divisors (84719027).

671838541 is a wasteful number, since it uses less digits than its factorization.

671838541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970243.

The product of its digits is 161280, while the sum is 43.

The square root of 671838541 is about 25919.8483984764. The cubic root of 671838541 is about 875.8336722811.

The spelling of 671838541 in words is "six hundred seventy-one million, eight hundred thirty-eight thousand, five hundred forty-one".