3681493 has 8 divisors (see below), whose sum is σ = 3754080. Its totient is φ = 3609840.

The previous prime is 3681487. The next prime is 3681499. The reversal of 3681493 is 3941863.

3681493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3681487) and next prime (3681499).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3681493 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3681499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20478 + ... + 20656.

It is an arithmetic number, because the mean of its divisors is an integer number (469260).

Almost surely, 2^3681493 is an apocalyptic number.

It is an amenable number.

3681493 is a deficient number, since it is larger than the sum of its proper divisors (72587).

3681493 is a wasteful number, since it uses less digits than its factorization.

3681493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467.

The product of its digits is 15552, while the sum is 34.

The square root of 3681493 is about 1918.7217098892. The cubic root of 3681493 is about 154.4097286191.

The spelling of 3681493 in words is "three million, six hundred eighty-one thousand, four hundred ninety-three".