3681319 has 2 divisors, whose sum is σ = 3681320. Its totient is φ = 3681318.

The previous prime is 3681287. The next prime is 3681341. The reversal of 3681319 is 9131863.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3681319 - 2⁵ = 3681287 is a prime.

It is a super-2 number, since 2×3681319² = 27104219159522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3681619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1840659 + 1840660.

It is an arithmetic number, because the mean of its divisors is an integer number (1840660).

Almost surely, 2^3681319 is an apocalyptic number.

3681319 is a deficient number, since it is larger than the sum of its proper divisors (1).

3681319 is an equidigital number, since it uses as much as digits as its factorization.

3681319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The square root of 3681319 is about 1918.6763666653. The cubic root of 3681319 is about 154.4072959361.

The spelling of 3681319 in words is "three million, six hundred eighty-one thousand, three hundred nineteen".