8051393863 has 4 divisors (see below), whose sum is σ = 8060991120. Its totient is φ = 8041796608.

The previous prime is 8051393837. The next prime is 8051393947. The reversal of 8051393863 is 3683931508.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8051393863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8051393263) 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, 4797370 + ... + 4799047.

It is an arithmetic number, because the mean of its divisors is an integer number (2015247780).

Almost surely, 2^8051393863 is an apocalyptic number.

8051393863 is a deficient number, since it is larger than the sum of its proper divisors (9597257).

8051393863 is an equidigital number, since it uses as much as digits as its factorization.

8051393863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9597256.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 8051393863 is about 89729.5595832276. The cubic root of 8051393863 is about 2004.2736832278.

The spelling of 8051393863 in words is "eight billion, fifty-one million, three hundred ninety-three thousand, eight hundred sixty-three".