164667331 has 2 divisors, whose sum is σ = 164667332. Its totient is φ = 164667330.

The previous prime is 164667313. The next prime is 164667337. The reversal of 164667331 is 133766461.

It is a happy number.

Together with previous prime (164667313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (133766461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164667331 - 2⁷ = 164667203 is a prime.

It is a super-2 number, since 2×164667331² = 54230659797327122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (164667337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82333665 + 82333666.

It is an arithmetic number, because the mean of its divisors is an integer number (82333666).

Almost surely, 2^164667331 is an apocalyptic number.

164667331 is a deficient number, since it is larger than the sum of its proper divisors (1).

164667331 is an equidigital number, since it uses as much as digits as its factorization.

164667331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The square root of 164667331 is about 12832.2769218872. The cubic root of 164667331 is about 548.1117961036. Note that the first 3 decimals are identical.

The spelling of 164667331 in words is "one hundred sixty-four million, six hundred sixty-seven thousand, three hundred thirty-one".