164123587 has 2 divisors, whose sum is σ = 164123588. Its totient is φ = 164123586.

The previous prime is 164123581. The next prime is 164123591. The reversal of 164123587 is 785321461.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164123587 is a prime.

It is not a weakly prime, because it can be changed into another prime (164123581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82061793 + 82061794.

It is an arithmetic number, because the mean of its divisors is an integer number (82061794).

Almost surely, 2^164123587 is an apocalyptic number.

164123587 is a deficient number, since it is larger than the sum of its proper divisors (1).

164123587 is an equidigital number, since it uses as much as digits as its factorization.

164123587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 37.

The square root of 164123587 is about 12811.0728278314. The cubic root of 164123587 is about 547.5078286100.

The spelling of 164123587 in words is "one hundred sixty-four million, one hundred twenty-three thousand, five hundred eighty-seven".