18098642 has 8 divisors (see below), whose sum is σ = 28744956. Its totient is φ = 8516992.

The previous prime is 18098627. The next prime is 18098651. The reversal of 18098642 is 24689081.

It can be written as a sum of positive squares in 2 ways, for example, as 17648401 + 450241 = 4201^2 + 671^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 18098596 and 18098605.

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, 266123 + ... + 266190.

Almost surely, 2^18098642 is an apocalyptic number.

18098642 is a deficient number, since it is larger than the sum of its proper divisors (10646314).

18098642 is a wasteful number, since it uses less digits than its factorization.

18098642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532332.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 18098642 is about 4254.2498751249. The cubic root of 18098642 is about 262.5519993736.

The spelling of 18098642 in words is "eighteen million, ninety-eight thousand, six hundred forty-two".