181982029 has 4 divisors (see below), whose sum is σ = 183187360. Its totient is φ = 180776700.

The previous prime is 181982023. The next prime is 181982051. The reversal of 181982029 is 920289181.

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 181982029 - 2⁹ = 181981517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 181981982 and 181982000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181982023) 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, 602439 + ... + 602740.

It is an arithmetic number, because the mean of its divisors is an integer number (45796840).

Almost surely, 2^181982029 is an apocalyptic number.

It is an amenable number.

181982029 is a deficient number, since it is larger than the sum of its proper divisors (1205331).

181982029 is a wasteful number, since it uses less digits than its factorization.

181982029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205330.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 181982029 is about 13490.0714972160. The cubic root of 181982029 is about 566.6864577094.

The spelling of 181982029 in words is "one hundred eighty-one million, nine hundred eighty-two thousand, twenty-nine".