4581778867 has 4 divisors (see below), whose sum is σ = 4582262016. Its totient is φ = 4581295720.

The previous prime is 4581778819. The next prime is 4581778913. The reversal of 4581778867 is 7688771854.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4581778867 - 2¹¹ = 4581776819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4581778567) 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, 227059 + ... + 246412.

It is an arithmetic number, because the mean of its divisors is an integer number (1145565504).

Almost surely, 2^4581778867 is an apocalyptic number.

4581778867 is a deficient number, since it is larger than the sum of its proper divisors (483149).

4581778867 is an equidigital number, since it uses as much as digits as its factorization.

4581778867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483148.

The product of its digits is 21073920, while the sum is 61.

The square root of 4581778867 is about 67688.8385703286. The cubic root of 4581778867 is about 1660.9046777978.

The spelling of 4581778867 in words is "four billion, five hundred eighty-one million, seven hundred seventy-eight thousand, eight hundred sixty-seven".