164144887 has 2 divisors, whose sum is σ = 164144888. Its totient is φ = 164144886.

The previous prime is 164144873. The next prime is 164144909. The reversal of 164144887 is 788441461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164144887 - 2⁷ = 164144759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164144837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82072443 + 82072444.

It is an arithmetic number, because the mean of its divisors is an integer number (82072444).

Almost surely, 2^164144887 is an apocalyptic number.

164144887 is a deficient number, since it is larger than the sum of its proper divisors (1).

164144887 is an equidigital number, since it uses as much as digits as its factorization.

164144887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172032, while the sum is 43.

The square root of 164144887 is about 12811.9041129724. The cubic root of 164144887 is about 547.5315128196.

The spelling of 164144887 in words is "one hundred sixty-four million, one hundred forty-four thousand, eight hundred eighty-seven".