181236223941 has 8 divisors (see below), whose sum is σ = 241837534944. Its totient is φ = 120729531120.

The previous prime is 181236223901. The next prime is 181236223997. The reversal of 181236223941 is 149322632181.

It is a happy number.

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

It is not a de Polignac number, because 181236223941 - 2¹⁵ = 181236191173 is a prime.

It is a super-3 number, since 3×181236223941³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 181236223893 and 181236223902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181236223901) 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, 23650075 + ... + 23657736.

It is an arithmetic number, because the mean of its divisors is an integer number (30229691868).

Almost surely, 2^181236223941 is an apocalyptic number.

It is an amenable number.

181236223941 is a deficient number, since it is larger than the sum of its proper divisors (60601311003).

181236223941 is a wasteful number, since it uses less digits than its factorization.

181236223941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47309091.

The product of its digits is 124416, while the sum is 42.

The spelling of 181236223941 in words is "one hundred eighty-one billion, two hundred thirty-six million, two hundred twenty-three thousand, nine hundred forty-one".