64319189 has 4 divisors (see below), whose sum is σ = 70166400. Its totient is φ = 58471980.

The previous prime is 64319173. The next prime is 64319231. The reversal of 64319189 is 98191346.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64319189 - 2⁴ = 64319173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64315189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2923589 + ... + 2923610.

It is an arithmetic number, because the mean of its divisors is an integer number (17541600).

Almost surely, 2^64319189 is an apocalyptic number.

It is an amenable number.

64319189 is a deficient number, since it is larger than the sum of its proper divisors (5847211).

64319189 is a wasteful number, since it uses less digits than its factorization.

64319189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5847210.

The product of its digits is 46656, while the sum is 41.

The square root of 64319189 is about 8019.9245008915. The cubic root of 64319189 is about 400.6638746499.

The spelling of 64319189 in words is "sixty-four million, three hundred nineteen thousand, one hundred eighty-nine".