4571993869 has 16 divisors (see below), whose sum is σ = 4803058800. Its totient is φ = 4346044416.

The previous prime is 4571993687. The next prime is 4571993873. The reversal of 4571993869 is 9683991754.

It can be written as a sum of positive squares in 8 ways, for example, as 476100 + 4571517769 = 690^2 + 67613^2 .

It is a cyclic number.

It is not a de Polignac number, because 4571993869 - 2¹⁷ = 4571862797 is a prime.

It is a super-2 number, since 2×4571993869² = 41806255876347178322, 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 (4571993879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1423137 + ... + 1426345.

It is an arithmetic number, because the mean of its divisors is an integer number (300191175).

Almost surely, 2^4571993869 is an apocalyptic number.

It is an amenable number.

4571993869 is a deficient number, since it is larger than the sum of its proper divisors (231064931).

4571993869 is a wasteful number, since it uses less digits than its factorization.

4571993869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3984.

The product of its digits is 14696640, while the sum is 61.

The square root of 4571993869 is about 67616.5206809697. The cubic root of 4571993869 is about 1659.7214741726.

The spelling of 4571993869 in words is "four billion, five hundred seventy-one million, nine hundred ninety-three thousand, eight hundred sixty-nine".