64368019 has 2 divisors, whose sum is σ = 64368020. Its totient is φ = 64368018.

The previous prime is 64367999. The next prime is 64368041. The reversal of 64368019 is 91086346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64368019 - 2¹⁵ = 64335251 is a prime.

It is a super-2 number, since 2×64368019² = 8286483739968722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64368079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32184009 + 32184010.

It is an arithmetic number, because the mean of its divisors is an integer number (32184010).

Almost surely, 2^64368019 is an apocalyptic number.

64368019 is a deficient number, since it is larger than the sum of its proper divisors (1).

64368019 is an equidigital number, since it uses as much as digits as its factorization.

64368019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 64368019 is about 8022.9682163150. The cubic root of 64368019 is about 400.7652413307.

The spelling of 64368019 in words is "sixty-four million, three hundred sixty-eight thousand, nineteen".