64185151 has 2 divisors, whose sum is σ = 64185152. Its totient is φ = 64185150.

The previous prime is 64185137. The next prime is 64185169. The reversal of 64185151 is 15158146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64185151 - 2⁵ = 64185119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64185101) 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 as a sum of consecutive naturals, namely, 32092575 + 32092576.

It is an arithmetic number, because the mean of its divisors is an integer number (32092576).

Almost surely, 2^64185151 is an apocalyptic number.

64185151 is a deficient number, since it is larger than the sum of its proper divisors (1).

64185151 is an equidigital number, since it uses as much as digits as its factorization.

64185151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 31.

The square root of 64185151 is about 8011.5635802258. The cubic root of 64185151 is about 400.3853598752.

The spelling of 64185151 in words is "sixty-four million, one hundred eighty-five thousand, one hundred fifty-one".