181082797 has 4 divisors (see below), whose sum is σ = 206951776. Its totient is φ = 155213820.

The previous prime is 181082771. The next prime is 181082807. The reversal of 181082797 is 797280181.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 797280181 = 37 ⋅21548113.

It is a cyclic number.

It is not a de Polignac number, because 181082797 - 2⁷ = 181082669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181082767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12934479 + ... + 12934492.

It is an arithmetic number, because the mean of its divisors is an integer number (51737944).

Almost surely, 2^181082797 is an apocalyptic number.

It is an amenable number.

181082797 is a deficient number, since it is larger than the sum of its proper divisors (25868979).

181082797 is an equidigital number, since it uses as much as digits as its factorization.

181082797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25868978.

The product of its (nonzero) digits is 56448, while the sum is 43.

The square root of 181082797 is about 13456.7008215238. The cubic root of 181082797 is about 565.7515224510.

The spelling of 181082797 in words is "one hundred eighty-one million, eighty-two thousand, seven hundred ninety-seven".