18101098 has 8 divisors (see below), whose sum is σ = 27179460. Its totient is φ = 9041280.

The previous prime is 18101089. The next prime is 18101099. The reversal of 18101098 is 89010181.

It can be written as a sum of positive squares in 2 ways, for example, as 15421329 + 2679769 = 3927^2 + 1637^2 .

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

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

It is not an unprimeable number, because it can be changed into a prime (18101099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1863 + ... + 6298.

Almost surely, 2^18101098 is an apocalyptic number.

18101098 is a deficient number, since it is larger than the sum of its proper divisors (9078362).

18101098 is a wasteful number, since it uses less digits than its factorization.

18101098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9272.

The product of its (nonzero) digits is 576, while the sum is 28.

The square root of 18101098 is about 4254.5385178654. The cubic root of 18101098 is about 262.5638750076.

The spelling of 18101098 in words is "eighteen million, one hundred one thousand, ninety-eight".