181214429 has 8 divisors (see below), whose sum is σ = 201039840. Its totient is φ = 161947600.

The previous prime is 181214393. The next prime is 181214443. The reversal of 181214429 is 924412181.

It is a happy number.

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-181214429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 181214395 and 181214404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181214479) 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, 138962 + ... + 140259.

It is an arithmetic number, because the mean of its divisors is an integer number (25129980).

Almost surely, 2^181214429 is an apocalyptic number.

It is an amenable number.

181214429 is a deficient number, since it is larger than the sum of its proper divisors (19825411).

181214429 is a wasteful number, since it uses less digits than its factorization.

181214429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279291.

The product of its digits is 4608, while the sum is 32.

The square root of 181214429 is about 13461.5908792386. The cubic root of 181214429 is about 565.8885738776. Note that the first 3 decimals are identical.

The spelling of 181214429 in words is "one hundred eighty-one million, two hundred fourteen thousand, four hundred twenty-nine".