164852981 has 2 divisors, whose sum is σ = 164852982. Its totient is φ = 164852980.

The previous prime is 164852959. The next prime is 164852999. The reversal of 164852981 is 189258461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133772356 + 31080625 = 11566^2 + 5575^2 .

It is a cyclic number.

It is not a de Polignac number, because 164852981 - 2¹⁰ = 164851957 is a prime.

It is a super-2 number, since 2×164852981² = 54353010689172722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164852921) 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, 82426490 + 82426491.

It is an arithmetic number, because the mean of its divisors is an integer number (82426491).

Almost surely, 2^164852981 is an apocalyptic number.

It is an amenable number.

164852981 is a deficient number, since it is larger than the sum of its proper divisors (1).

164852981 is an equidigital number, since it uses as much as digits as its factorization.

164852981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 44.

The square root of 164852981 is about 12839.5085965157. The cubic root of 164852981 is about 548.3177036490.

The spelling of 164852981 in words is "one hundred sixty-four million, eight hundred fifty-two thousand, nine hundred eighty-one".