18750098 has 4 divisors (see below), whose sum is σ = 28125150. Its totient is φ = 9375048.

The previous prime is 18750091. The next prime is 18750101. The reversal of 18750098 is 89005781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89005781 = 179 ⋅497239.

It can be written as a sum of positive squares in only one way, i.e., 10029889 + 8720209 = 3167^2 + 2953^2 .

It is not an unprimeable number, because it can be changed into a prime (18750091) 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 as a sum of consecutive naturals, namely, 4687523 + ... + 4687526.

Almost surely, 2^18750098 is an apocalyptic number.

18750098 is a deficient number, since it is larger than the sum of its proper divisors (9375052).

18750098 is an equidigital number, since it uses as much as digits as its factorization.

18750098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9375051.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 18750098 is about 4330.1383349727. The cubic root of 18750098 is about 265.6651051417.

The spelling of 18750098 in words is "eighteen million, seven hundred fifty thousand, ninety-eight".