181412761 has 2 divisors, whose sum is σ = 181412762. Its totient is φ = 181412760.

The previous prime is 181412683. The next prime is 181412773. The reversal of 181412761 is 167214181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160655625 + 20757136 = 12675^2 + 4556^2 .

It is an emirp because it is prime and its reverse (167214181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 181412761 - 2⁷ = 181412633 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (181413761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90706380 + 90706381.

It is an arithmetic number, because the mean of its divisors is an integer number (90706381).

Almost surely, 2^181412761 is an apocalyptic number.

181412761 is the 6024-th centered decagonal number.

It is an amenable number.

181412761 is a deficient number, since it is larger than the sum of its proper divisors (1).

181412761 is an equidigital number, since it uses as much as digits as its factorization.

181412761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 31.

The square root of 181412761 is about 13468.9554531894. The cubic root of 181412761 is about 566.0949461350.

It can be divided in two parts, 18141 and 2761, that added together give a palindrome (20902).

The spelling of 181412761 in words is "one hundred eighty-one million, four hundred twelve thousand, seven hundred sixty-one".