179740081 has 2 divisors, whose sum is σ = 179740082. Its totient is φ = 179740080.

The previous prime is 179740073. The next prime is 179740087. The reversal of 179740081 is 180047971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91680625 + 88059456 = 9575^2 + 9384^2 .

It is a cyclic number.

It is not a de Polignac number, because 179740081 - 2³ = 179740073 is a prime.

It is a super-2 number, since 2×179740081² = 64612993435773122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 179740081.

It is not a weakly prime, because it can be changed into another prime (179740087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 89870040 + 89870041.

It is an arithmetic number, because the mean of its divisors is an integer number (89870041).

Almost surely, 2^179740081 is an apocalyptic number.

It is an amenable number.

179740081 is a deficient number, since it is larger than the sum of its proper divisors (1).

179740081 is an equidigital number, since it uses as much as digits as its factorization.

179740081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 179740081 is about 13406.7177564085. The cubic root of 179740081 is about 564.3497162525.

The spelling of 179740081 in words is "one hundred seventy-nine million, seven hundred forty thousand, eighty-one".