4385968581 has 4 divisors (see below), whose sum is σ = 5847958112. Its totient is φ = 2923979052.

The previous prime is 4385968511. The next prime is 4385968583. The reversal of 4385968581 is 1858695834.

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 not a de Polignac number, because 4385968581 - 2⁷ = 4385968453 is a prime.

It is a super-2 number, since 2×4385968581² = 38473440787038307122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4385968583) 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, 730994761 + ... + 730994766.

It is an arithmetic number, because the mean of its divisors is an integer number (1461989528).

Almost surely, 2^4385968581 is an apocalyptic number.

It is an amenable number.

4385968581 is a deficient number, since it is larger than the sum of its proper divisors (1461989531).

4385968581 is a wasteful number, since it uses less digits than its factorization.

4385968581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461989530.

The product of its digits is 8294400, while the sum is 57.

The square root of 4385968581 is about 66226.6455514697. The cubic root of 4385968581 is about 1636.8988317944.

The spelling of 4385968581 in words is "four billion, three hundred eighty-five million, nine hundred sixty-eight thousand, five hundred eighty-one".