4878261851 has 4 divisors (see below), whose sum is σ = 4913357400. Its totient is φ = 4843166304.

The previous prime is 4878261847. The next prime is 4878261917. The reversal of 4878261851 is 1581628784.

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 4878261851 - 2² = 4878261847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4878261851.

It is not an unprimeable number, because it can be changed into a prime (4878261811) 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, 17547566 + ... + 17547843.

It is an arithmetic number, because the mean of its divisors is an integer number (1228339350).

Almost surely, 2^4878261851 is an apocalyptic number.

4878261851 is a deficient number, since it is larger than the sum of its proper divisors (35095549).

4878261851 is a wasteful number, since it uses less digits than its factorization.

4878261851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35095548.

The product of its digits is 860160, while the sum is 50.

The square root of 4878261851 is about 69844.5549130353. The cubic root of 4878261851 is about 1695.9838124558.

The spelling of 4878261851 in words is "four billion, eight hundred seventy-eight million, two hundred sixty-one thousand, eight hundred fifty-one".