4636381 has 2 divisors, whose sum is σ = 4636382. Its totient is φ = 4636380.

The previous prime is 4636369. The next prime is 4636441. The reversal of 4636381 is 1836364.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4239481 + 396900 = 2059^2 + 630^2 .

It is a cyclic number.

It is not a de Polignac number, because 4636381 - 2¹⁹ = 4112093 is a prime.

It is a super-2 number, since 2×4636381² = 42992057554322, which contains 22 as substring.

It is a Chen prime.

4636381 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4636351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2318190 + 2318191.

It is an arithmetic number, because the mean of its divisors is an integer number (2318191).

Almost surely, 2^4636381 is an apocalyptic number.

It is an amenable number.

4636381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4636381 is an equidigital number, since it uses as much as digits as its factorization.

4636381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 4636381 is about 2153.2257197052. The cubic root of 4636381 is about 166.7476437610.

The spelling of 4636381 in words is "four million, six hundred thirty-six thousand, three hundred eighty-one".