181980514 has 8 divisors (see below), whose sum is σ = 275475420. Its totient is φ = 90155376.

The previous prime is 181980493. The next prime is 181980517. The reversal of 181980514 is 415089181.

181980514 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 181791289 + 189225 = 13483^2 + 435^2 .

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

It is not an unprimeable number, because it can be changed into a prime (181980517) 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, 417169 + ... + 417604.

Almost surely, 2^181980514 is an apocalyptic number.

181980514 is a deficient number, since it is larger than the sum of its proper divisors (93494906).

181980514 is a wasteful number, since it uses less digits than its factorization.

181980514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834884.

The product of its (nonzero) digits is 11520, while the sum is 37.

The square root of 181980514 is about 13490.0153446911. The cubic root of 181980514 is about 566.6848851505.

The spelling of 181980514 in words is "one hundred eighty-one million, nine hundred eighty thousand, five hundred fourteen".