181113115383 has 12 divisors (see below), whose sum is σ = 264147716560. Its totient is φ = 119569823136.

The previous prime is 181113115369. The next prime is 181113115397. The reversal of 181113115383 is 383511311181.

181113115383 is a `hidden beast` number, since 1 + 8 + 1 + 113 + 1 + 1 + 538 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (181113115369) and next prime (181113115397).

It is not a de Polignac number, because 181113115383 - 2⁶ = 181113115319 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 (181113115303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97686838 + ... + 97688691.

Almost surely, 2^181113115383 is an apocalyptic number.

181113115383 is a deficient number, since it is larger than the sum of its proper divisors (83034601177).

181113115383 is a wasteful number, since it uses less digits than its factorization.

181113115383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195375638 (or 195375635 counting only the distinct ones).

The product of its digits is 8640, while the sum is 36.

The spelling of 181113115383 in words is "one hundred eighty-one billion, one hundred thirteen million, one hundred fifteen thousand, three hundred eighty-three".