18249898 has 8 divisors (see below), whose sum is σ = 27457092. Its totient is φ = 9097536.

The previous prime is 18249877. The next prime is 18249923. The reversal of 18249898 is 89894281.

It can be written as a sum of positive squares in 2 ways, for example, as 18173169 + 76729 = 4263^2 + 277^2 .

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

It is a super-3 number, since 3×18249898³ (a number of 23 digits) contains 333 as substring.

It is a plaindrome in base 16.

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, 12865 + ... + 14212.

Almost surely, 2^18249898 is an apocalyptic number.

18249898 is a deficient number, since it is larger than the sum of its proper divisors (9207194).

18249898 is a wasteful number, since it uses less digits than its factorization.

18249898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27416.

The product of its digits is 331776, while the sum is 49.

The square root of 18249898 is about 4271.9899344451. The cubic root of 18249898 is about 263.2813809099.

The spelling of 18249898 in words is "eighteen million, two hundred forty-nine thousand, eight hundred ninety-eight".