98181812 has 12 divisors (see below), whose sum is σ = 171931200. Its totient is φ = 49058616.

The previous prime is 98181803. The next prime is 98181823. The reversal of 98181812 is 21818189.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

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, 428 + ... + 14019.

It is an arithmetic number, because the mean of its divisors is an integer number (14327600).

Almost surely, 2^98181812 is an apocalyptic number.

It is an amenable number.

98181812 is a deficient number, since it is larger than the sum of its proper divisors (73749388).

98181812 is a wasteful number, since it uses less digits than its factorization.

98181812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16150 (or 16148 counting only the distinct ones).

The product of its digits is 9216, while the sum is 38.

The square root of 98181812 is about 9908.6735741975. The cubic root of 98181812 is about 461.3285662150.

The spelling of 98181812 in words is "ninety-eight million, one hundred eighty-one thousand, eight hundred twelve".