4621381 has 2 divisors, whose sum is σ = 4621382. Its totient is φ = 4621380.

The previous prime is 4621343. The next prime is 4621439. The reversal of 4621381 is 1831264.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3389281 + 1232100 = 1841^2 + 1110^2 .

It is a cyclic number.

It is not a de Polignac number, because 4621381 - 2¹¹ = 4619333 is a prime.

It is a super-2 number, since 2×4621381² = 42714324694322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4621481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2310690 + 2310691.

It is an arithmetic number, because the mean of its divisors is an integer number (2310691).

Almost surely, 2^4621381 is an apocalyptic number.

It is an amenable number.

4621381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4621381 is an equidigital number, since it uses as much as digits as its factorization.

4621381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 25.

The square root of 4621381 is about 2149.7397516909. The cubic root of 4621381 is about 166.5676242664.

The spelling of 4621381 in words is "four million, six hundred twenty-one thousand, three hundred eighty-one".