4867857815 has 4 divisors (see below), whose sum is σ = 5841429384. Its totient is φ = 3894286248.

The previous prime is 4867857791. The next prime is 4867857823. The reversal of 4867857815 is 5187587684.

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 4867857815 - 2¹² = 4867853719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486785777 + ... + 486785786.

It is an arithmetic number, because the mean of its divisors is an integer number (1460357346).

Almost surely, 2^4867857815 is an apocalyptic number.

4867857815 is a deficient number, since it is larger than the sum of its proper divisors (973571569).

4867857815 is an equidigital number, since it uses as much as digits as its factorization.

4867857815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973571568.

The product of its digits is 15052800, while the sum is 59.

The square root of 4867857815 is about 69770.0352228663. The cubic root of 4867857815 is about 1694.7772600573. Note that the first 3 decimals are identical.

The spelling of 4867857815 in words is "four billion, eight hundred sixty-seven million, eight hundred fifty-seven thousand, eight hundred fifteen".