164949739 has 2 divisors, whose sum is σ = 164949740. Its totient is φ = 164949738.

The previous prime is 164949713. The next prime is 164949751. The reversal of 164949739 is 937949461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164949739 - 2⁷ = 164949611 is a prime.

It is not a weakly prime, because it can be changed into another prime (164949439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82474869 + 82474870.

It is an arithmetic number, because the mean of its divisors is an integer number (82474870).

Almost surely, 2^164949739 is an apocalyptic number.

164949739 is a deficient number, since it is larger than the sum of its proper divisors (1).

164949739 is an equidigital number, since it uses as much as digits as its factorization.

164949739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 52.

The square root of 164949739 is about 12843.2760228845. The cubic root of 164949739 is about 548.4249583023.

The spelling of 164949739 in words is "one hundred sixty-four million, nine hundred forty-nine thousand, seven hundred thirty-nine".