164195803 has 2 divisors, whose sum is σ = 164195804. Its totient is φ = 164195802.

The previous prime is 164195797. The next prime is 164195813. The reversal of 164195803 is 308591461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164195803 - 2⁵ = 164195771 is a prime.

It is not a weakly prime, because it can be changed into another prime (164195813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82097901 + 82097902.

It is an arithmetic number, because the mean of its divisors is an integer number (82097902).

Almost surely, 2^164195803 is an apocalyptic number.

164195803 is a deficient number, since it is larger than the sum of its proper divisors (1).

164195803 is an equidigital number, since it uses as much as digits as its factorization.

164195803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 164195803 is about 12813.8910171735. The cubic root of 164195803 is about 547.5881197864.

It can be divided in two parts, 16419 and 5803, that added together give a palindrome (22222).

The spelling of 164195803 in words is "one hundred sixty-four million, one hundred ninety-five thousand, eight hundred three".