181414138 has 8 divisors (see below), whose sum is σ = 273133620. Its totient is φ = 90369600.

The previous prime is 181414127. The next prime is 181414141. The reversal of 181414138 is 831414181.

It can be written as a sum of positive squares in 2 ways, for example, as 118004769 + 63409369 = 10863^2 + 7963^2 .

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

It is a super-2 number, since 2×181414138² = 65822178932566088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168063 + ... + 169138.

Almost surely, 2^181414138 is an apocalyptic number.

181414138 is a deficient number, since it is larger than the sum of its proper divisors (91719482).

181414138 is a wasteful number, since it uses less digits than its factorization.

181414138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337472.

The product of its digits is 3072, while the sum is 31.

The square root of 181414138 is about 13469.0065706421. The cubic root of 181414138 is about 566.0963784318.

The spelling of 181414138 in words is "one hundred eighty-one million, four hundred fourteen thousand, one hundred thirty-eight".