4091681589 has 4 divisors (see below), whose sum is σ = 5455575456. Its totient is φ = 2727787724.

The previous prime is 4091681557. The next prime is 4091681687. The reversal of 4091681589 is 9851861904.

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 4091681589 - 2⁵ = 4091681557 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4091681189) 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, 681946929 + ... + 681946934.

It is an arithmetic number, because the mean of its divisors is an integer number (1363893864).

Almost surely, 2^4091681589 is an apocalyptic number.

It is an amenable number.

4091681589 is a deficient number, since it is larger than the sum of its proper divisors (1363893867).

4091681589 is a wasteful number, since it uses less digits than its factorization.

4091681589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363893866.

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 4091681589 is about 63966.2535169913. The cubic root of 4091681589 is about 1599.4375091768.

The spelling of 4091681589 in words is "four billion, ninety-one million, six hundred eighty-one thousand, five hundred eighty-nine".