18181829101 has 4 divisors (see below), whose sum is σ = 18187729632. Its totient is φ = 18175928572.

The previous prime is 18181829077. The next prime is 18181829123. The reversal of 18181829101 is 10192818181.

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.

It is a cyclic number.

It is not a de Polignac number, because 18181829101 - 2³³ = 9591894509 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 (18181829131) 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, 2945641 + ... + 2951806.

It is an arithmetic number, because the mean of its divisors is an integer number (4546932408).

Almost surely, 2^18181829101 is an apocalyptic number.

It is an amenable number.

18181829101 is a deficient number, since it is larger than the sum of its proper divisors (5900531).

18181829101 is an equidigital number, since it uses as much as digits as its factorization.

18181829101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5900530.

The product of its (nonzero) digits is 9216, while the sum is 40.

The spelling of 18181829101 in words is "eighteen billion, one hundred eighty-one million, eight hundred twenty-nine thousand, one hundred one".