5163781394 has 16 divisors (see below), whose sum is σ = 7891428696. Its totient is φ = 2533507200.

The previous prime is 5163781391. The next prime is 5163781397. The reversal of 5163781394 is 4931873615.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (5163781391) and next prime (5163781397).

It can be written as a sum of positive squares in 4 ways, for example, as 975750169 + 4188031225 = 31237^2 + 64715^2 .

It is not an unprimeable number, because it can be changed into a prime (5163781391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1094 + ... + 101630.

Almost surely, 2^5163781394 is an apocalyptic number.

5163781394 is a deficient number, since it is larger than the sum of its proper divisors (2727647302).

5163781394 is a wasteful number, since it uses less digits than its factorization.

5163781394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101021.

The product of its digits is 544320, while the sum is 47.

The square root of 5163781394 is about 71859.4558426377. The cubic root of 5163781394 is about 1728.4465315589.

The spelling of 5163781394 in words is "five billion, one hundred sixty-three million, seven hundred eighty-one thousand, three hundred ninety-four".