3640019 has 2 divisors, whose sum is σ = 3640020. Its totient is φ = 3640018.

The previous prime is 3639997. The next prime is 3640027. The reversal of 3640019 is 9100463.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3640019 - 2⁸ = 3639763 is a prime.

It is a super-2 number, since 2×3640019² = 26499476640722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3639976 and 3640003.

It is not a weakly prime, because it can be changed into another prime (3640519) 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 as a sum of consecutive naturals, namely, 1820009 + 1820010.

It is an arithmetic number, because the mean of its divisors is an integer number (1820010).

Almost surely, 2^3640019 is an apocalyptic number.

3640019 is a deficient number, since it is larger than the sum of its proper divisors (1).

3640019 is an equidigital number, since it uses as much as digits as its factorization.

3640019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 3640019 is about 1907.8833821804. The cubic root of 3640019 is about 153.8277012676.

The spelling of 3640019 in words is "three million, six hundred forty thousand, nineteen".