180952381 has 2 divisors, whose sum is σ = 180952382. Its totient is φ = 180952380.

The previous prime is 180952379. The next prime is 180952399. The reversal of 180952381 is 183259081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99321156 + 81631225 = 9966^2 + 9035^2 .

It is an emirp because it is prime and its reverse (183259081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 180952381 - 2¹ = 180952379 is a prime.

It is a super-2 number, since 2×180952381² = 65487528379138322, which contains 22 as substring.

Together with 180952379, it forms a pair of twin primes.

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 180952381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180952081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90476190 + 90476191.

It is an arithmetic number, because the mean of its divisors is an integer number (90476191).

Almost surely, 2^180952381 is an apocalyptic number.

It is an amenable number.

180952381 is a deficient number, since it is larger than the sum of its proper divisors (1).

180952381 is an equidigital number, since it uses as much as digits as its factorization.

180952381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 180952381 is about 13451.8541844610. The cubic root of 180952381 is about 565.6156715737.

The spelling of 180952381 in words is "one hundred eighty million, nine hundred fifty-two thousand, three hundred eighty-one".