4568891557 has 4 divisors (see below), whose sum is σ = 4767539040. Its totient is φ = 4370244076.

The previous prime is 4568891543. The next prime is 4568891653. The reversal of 4568891557 is 7551988654.

It is a happy number.

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 4568891557 - 2⁷ = 4568891429 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4568891057) 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, 99323707 + ... + 99323752.

It is an arithmetic number, because the mean of its divisors is an integer number (1191884760).

Almost surely, 2^4568891557 is an apocalyptic number.

It is an amenable number.

4568891557 is a deficient number, since it is larger than the sum of its proper divisors (198647483).

4568891557 is a wasteful number, since it uses less digits than its factorization.

4568891557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198647482.

The product of its digits is 12096000, while the sum is 58.

The square root of 4568891557 is about 67593.5762998230. The cubic root of 4568891557 is about 1659.3459896437.

The spelling of 4568891557 in words is "four billion, five hundred sixty-eight million, eight hundred ninety-one thousand, five hundred fifty-seven".