181056937 has 2 divisors, whose sum is σ = 181056938. Its totient is φ = 181056936.

The previous prime is 181056923. The next prime is 181056949. The reversal of 181056937 is 739650181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171191056 + 9865881 = 13084^2 + 3141^2 .

It is a cyclic number.

It is not a de Polignac number, because 181056937 - 2⁷ = 181056809 is a prime.

It is a super-2 number, since 2×181056937² = 65563228871643938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 181056937.

It is not a weakly prime, because it can be changed into another prime (181056907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90528468 + 90528469.

It is an arithmetic number, because the mean of its divisors is an integer number (90528469).

Almost surely, 2^181056937 is an apocalyptic number.

It is an amenable number.

181056937 is a deficient number, since it is larger than the sum of its proper divisors (1).

181056937 is an equidigital number, since it uses as much as digits as its factorization.

181056937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 181056937 is about 13455.7399276294. The cubic root of 181056937 is about 565.7245899629.

The spelling of 181056937 in words is "one hundred eighty-one million, fifty-six thousand, nine hundred thirty-seven".