3612381 has 16 divisors (see below), whose sum is σ = 5140224. Its totient is φ = 2248704.

The previous prime is 3612341. The next prime is 3612391. The reversal of 3612381 is 1832163.

It is not a de Polignac number, because 3612381 - 2⁶ = 3612317 is a prime.

It is a super-2 number, since 2×3612381² = 26098592978322, which contains 22 as substring.

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 (3612331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9660 + ... + 10026.

It is an arithmetic number, because the mean of its divisors is an integer number (321264).

Almost surely, 2^3612381 is an apocalyptic number.

It is an amenable number.

3612381 is a deficient number, since it is larger than the sum of its proper divisors (1527843).

3612381 is a wasteful number, since it uses less digits than its factorization.

3612381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580.

The product of its digits is 864, while the sum is 24.

The square root of 3612381 is about 1900.6264756653. The cubic root of 3612381 is about 153.4373831685.

It can be divided in two parts, 3612 and 381, that added together give a palindrome (3993).

The spelling of 3612381 in words is "three million, six hundred twelve thousand, three hundred eighty-one".