164181799 has 2 divisors, whose sum is σ = 164181800. Its totient is φ = 164181798.

The previous prime is 164181791. The next prime is 164181803. The reversal of 164181799 is 997181461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164181799 - 2³ = 164181791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164181791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82090899 + 82090900.

It is an arithmetic number, because the mean of its divisors is an integer number (82090900).

Almost surely, 2^164181799 is an apocalyptic number.

164181799 is a deficient number, since it is larger than the sum of its proper divisors (1).

164181799 is an equidigital number, since it uses as much as digits as its factorization.

164181799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 46.

The square root of 164181799 is about 12813.3445672861. The cubic root of 164181799 is about 547.5725517026.

The spelling of 164181799 in words is "one hundred sixty-four million, one hundred eighty-one thousand, seven hundred ninety-nine".