64115189 has 8 divisors (see below), whose sum is σ = 64820448. Its totient is φ = 63414000.

The previous prime is 64115173. The next prime is 64115203. The reversal of 64115189 is 98151146.

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

It is a cyclic number.

It is not a de Polignac number, because 64115189 - 2⁴ = 64115173 is a prime.

It is a super-2 number, since 2×64115189² = 8221514921011442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64115119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38594 + ... + 40220.

It is an arithmetic number, because the mean of its divisors is an integer number (8102556).

Almost surely, 2^64115189 is an apocalyptic number.

It is an amenable number.

64115189 is a deficient number, since it is larger than the sum of its proper divisors (705259).

64115189 is a wasteful number, since it uses less digits than its factorization.

64115189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035.

The product of its digits is 8640, while the sum is 35.

The square root of 64115189 is about 8007.1960760306. The cubic root of 64115189 is about 400.2398332546.

The spelling of 64115189 in words is "sixty-four million, one hundred fifteen thousand, one hundred eighty-nine".