4815847381 has 2 divisors, whose sum is σ = 4815847382. Its totient is φ = 4815847380.

The previous prime is 4815847321. The next prime is 4815847391. The reversal of 4815847381 is 1837485184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3888644881 + 927202500 = 62359^2 + 30450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4815847381 is a prime.

It is a super-2 number, since 2×4815847381² = 46384771994169118322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4815847321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2407923690 + 2407923691.

It is an arithmetic number, because the mean of its divisors is an integer number (2407923691).

Almost surely, 2^4815847381 is an apocalyptic number.

It is an amenable number.

4815847381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4815847381 is an equidigital number, since it uses as much as digits as its factorization.

4815847381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 860160, while the sum is 49.

The square root of 4815847381 is about 69396.3066812637. The cubic root of 4815847381 is about 1688.7197078321.

The spelling of 4815847381 in words is "four billion, eight hundred fifteen million, eight hundred forty-seven thousand, three hundred eighty-one".