181209098 has 8 divisors (see below), whose sum is σ = 310644192. Its totient is φ = 77661036.

The previous prime is 181209079. The next prime is 181209109. The reversal of 181209098 is 890902181.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6471740 + ... + 6471767.

It is an arithmetic number, because the mean of its divisors is an integer number (38830524).

Almost surely, 2^181209098 is an apocalyptic number.

181209098 is a deficient number, since it is larger than the sum of its proper divisors (129435094).

181209098 is a wasteful number, since it uses less digits than its factorization.

181209098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12943516.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 181209098 is about 13461.3928699819. The cubic root of 181209098 is about 565.8830246845.

The spelling of 181209098 in words is "one hundred eighty-one million, two hundred nine thousand, ninety-eight".