181939054 has 16 divisors (see below), whose sum is σ = 301489920. Its totient is φ = 81651960.

The previous prime is 181939033. The next prime is 181939061. The reversal of 181939054 is 450939181.

It is a junction number, because it is equal to n+sod(n) for n = 181938998 and 181939016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50604 + ... + 54079.

It is an arithmetic number, because the mean of its divisors is an integer number (18843120).

Almost surely, 2^181939054 is an apocalyptic number.

181939054 is a deficient number, since it is larger than the sum of its proper divisors (119550866).

181939054 is a wasteful number, since it uses less digits than its factorization.

181939054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104775.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 181939054 is about 13488.4785650569. The cubic root of 181939054 is about 566.6418465869.

The spelling of 181939054 in words is "one hundred eighty-one million, nine hundred thirty-nine thousand, fifty-four".