164181803 has 2 divisors, whose sum is σ = 164181804. Its totient is φ = 164181802.

The previous prime is 164181799. The next prime is 164181817. The reversal of 164181803 is 308181461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164181803 - 2² = 164181799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164181803.

It is not a weakly prime, because it can be changed into another prime (164181883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82090901 + 82090902.

It is an arithmetic number, because the mean of its divisors is an integer number (82090902).

Almost surely, 2^164181803 is an apocalyptic number.

164181803 is a deficient number, since it is larger than the sum of its proper divisors (1).

164181803 is an equidigital number, since it uses as much as digits as its factorization.

164181803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 164181803 is about 12813.3447233734. The cubic root of 164181803 is about 547.5725561495.

The spelling of 164181803 in words is "one hundred sixty-four million, one hundred eighty-one thousand, eight hundred three".