164421883 has 2 divisors, whose sum is σ = 164421884. Its totient is φ = 164421882.

The previous prime is 164421863. The next prime is 164421889. The reversal of 164421883 is 388124461.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164421883 is a prime.

It is a super-3 number, since 3×164421883³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (164421889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82210941 + 82210942.

It is an arithmetic number, because the mean of its divisors is an integer number (82210942).

Almost surely, 2^164421883 is an apocalyptic number.

164421883 is a deficient number, since it is larger than the sum of its proper divisors (1).

164421883 is an equidigital number, since it uses as much as digits as its factorization.

164421883 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 37.

The square root of 164421883 is about 12822.7096590385. The cubic root of 164421883 is about 547.8393278849.

The spelling of 164421883 in words is "one hundred sixty-four million, four hundred twenty-one thousand, eight hundred eighty-three".