4665436381 has 2 divisors, whose sum is σ = 4665436382. Its totient is φ = 4665436380.

The previous prime is 4665436379. The next prime is 4665436417. The reversal of 4665436381 is 1836345664.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4636384281 + 29052100 = 68091^2 + 5390^2 .

It is a cyclic number.

It is not a de Polignac number, because 4665436381 - 2¹ = 4665436379 is a prime.

It is a super-2 number, since 2×4665436381² = 43532593250316754322, which contains 22 as substring.

Together with 4665436379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4665436981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2332718190 + 2332718191.

It is an arithmetic number, because the mean of its divisors is an integer number (2332718191).

Almost surely, 2^4665436381 is an apocalyptic number.

It is an amenable number.

4665436381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4665436381 is an equidigital number, since it uses as much as digits as its factorization.

4665436381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 46.

The square root of 4665436381 is about 68303.9997437925. Note that the first 3 decimals coincide. The cubic root of 4665436381 is about 1670.9524466386.

The spelling of 4665436381 in words is "four billion, six hundred sixty-five million, four hundred thirty-six thousand, three hundred eighty-one".