4815378851 has 4 divisors (see below), whose sum is σ = 4816207704. Its totient is φ = 4814550000.

The previous prime is 4815378839. The next prime is 4815378901. The reversal of 4815378851 is 1588735184.

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 4815378851 - 2⁶ = 4815378787 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 4815378851.

It is not an unprimeable number, because it can be changed into a prime (4815378551) 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, 405650 + ... + 417351.

It is an arithmetic number, because the mean of its divisors is an integer number (1204051926).

Almost surely, 2^4815378851 is an apocalyptic number.

4815378851 is a deficient number, since it is larger than the sum of its proper divisors (828853).

4815378851 is an equidigital number, since it uses as much as digits as its factorization.

4815378851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828852.

The product of its digits is 1075200, while the sum is 50.

The square root of 4815378851 is about 69392.9308431342. The cubic root of 4815378851 is about 1688.6649413191.

The spelling of 4815378851 in words is "four billion, eight hundred fifteen million, three hundred seventy-eight thousand, eight hundred fifty-one".