3630381 has 4 divisors (see below), whose sum is σ = 4840512. Its totient is φ = 2420252.

The previous prime is 3630377. The next prime is 3630391. The reversal of 3630381 is 1830363.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3630381 - 2² = 3630377 is a prime.

It is a super-2 number, since 2×3630381² = 26359332410322, which contains 22 as substring.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3630331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605061 + ... + 605066.

It is an arithmetic number, because the mean of its divisors is an integer number (1210128).

Almost surely, 2^3630381 is an apocalyptic number.

It is an amenable number.

3630381 is a deficient number, since it is larger than the sum of its proper divisors (1210131).

3630381 is a wasteful number, since it uses less digits than its factorization.

3630381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210130.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 3630381 is about 1905.3558722716. The cubic root of 3630381 is about 153.6918135298.

The spelling of 3630381 in words is "three million, six hundred thirty thousand, three hundred eighty-one".