181083075440413 has 8 divisors (see below), whose sum is σ = 181380109309560. Its totient is φ = 180786222309120.

The previous prime is 181083075440369. The next prime is 181083075440441. The reversal of 181083075440413 is 314044570380181.

181083075440413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 60010090437924 + 121072985002489 = 7746618^2 + 11003317^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-181083075440413 is a prime.

It is a super-2 number, since 2×181083075440413² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181083075440453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43178928 + ... + 47186713.

It is an arithmetic number, because the mean of its divisors is an integer number (22672513663695).

Almost surely, 2^{181083075440413} is an apocalyptic number.

It is an amenable number.

181083075440413 is a deficient number, since it is larger than the sum of its proper divisors (297033869147).

181083075440413 is an equidigital number, since it uses as much as digits as its factorization.

181083075440413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90368927.

The product of its (nonzero) digits is 1290240, while the sum is 49.

The spelling of 181083075440413 in words is "one hundred eighty-one trillion, eighty-three billion, seventy-five million, four hundred forty thousand, four hundred thirteen".