64188146 has 8 divisors (see below), whose sum is σ = 105035184. Its totient is φ = 29176420.

The previous prime is 64188139. The next prime is 64188169.

64188146 is nontrivially palindromic in base 10.

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

It is an unprimeable number.

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, 1458800 + ... + 1458843.

It is an arithmetic number, because the mean of its divisors is an integer number (13129398).

Almost surely, 2^64188146 is an apocalyptic number.

64188146 is a deficient number, since it is larger than the sum of its proper divisors (40847038).

64188146 is a wasteful number, since it uses less digits than its factorization.

64188146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917656.

The product of its digits is 36864, while the sum is 38.

The square root of 64188146 is about 8011.7504953662. The cubic root of 64188146 is about 400.3915873566.

The spelling of 64188146 in words is "sixty-four million, one hundred eighty-eight thousand, one hundred forty-six".