164430281 has 2 divisors, whose sum is σ = 164430282. Its totient is φ = 164430280.

The previous prime is 164430263. The next prime is 164430337. The reversal of 164430281 is 182034461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117917881 + 46512400 = 10859^2 + 6820^2 .

It is a cyclic number.

It is not a de Polignac number, because 164430281 - 2²⁶ = 97321417 is a prime.

It is a super-3 number, since 3×164430281³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (164433281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82215140 + 82215141.

It is an arithmetic number, because the mean of its divisors is an integer number (82215141).

Almost surely, 2^164430281 is an apocalyptic number.

It is an amenable number.

164430281 is a deficient number, since it is larger than the sum of its proper divisors (1).

164430281 is an equidigital number, since it uses as much as digits as its factorization.

164430281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 164430281 is about 12823.0371207448. The cubic root of 164430281 is about 547.8486548598.

The spelling of 164430281 in words is "one hundred sixty-four million, four hundred thirty thousand, two hundred eighty-one".