164734139 has 2 divisors, whose sum is σ = 164734140. Its totient is φ = 164734138.

The previous prime is 164734133. The next prime is 164734259. The reversal of 164734139 is 931437461.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164734139 is a prime.

It is not a weakly prime, because it can be changed into another prime (164734133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82367069 + 82367070.

It is an arithmetic number, because the mean of its divisors is an integer number (82367070).

Almost surely, 2^164734139 is an apocalyptic number.

164734139 is a deficient number, since it is larger than the sum of its proper divisors (1).

164734139 is an equidigital number, since it uses as much as digits as its factorization.

164734139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 164734139 is about 12834.8797812835. The cubic root of 164734139 is about 548.1859118001.

The spelling of 164734139 in words is "one hundred sixty-four million, seven hundred thirty-four thousand, one hundred thirty-nine".