18073898 has 8 divisors (see below), whose sum is σ = 27351108. Its totient is φ = 8956864.

The previous prime is 18073877. The next prime is 18073919. The reversal of 18073898 is 89837081.

It is an interprime number because it is at equal distance from previous prime (18073877) and next prime (18073919).

It can be written as a sum of positive squares in 2 ways, for example, as 15784729 + 2289169 = 3973^2 + 1513^2 .

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

It is an unprimeable number.

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, 39761 + ... + 40212.

Almost surely, 2^18073898 is an apocalyptic number.

18073898 is a deficient number, since it is larger than the sum of its proper divisors (9277210).

18073898 is a wasteful number, since it uses less digits than its factorization.

18073898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80088.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 18073898 is about 4251.3407296993. The cubic root of 18073898 is about 262.4322933467.

The spelling of 18073898 in words is "eighteen million, seventy-three thousand, eight hundred ninety-eight".