19140098 has 4 divisors (see below), whose sum is σ = 28710150. Its totient is φ = 9570048.

The previous prime is 19140097. The next prime is 19140103. The reversal of 19140098 is 89004191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89004191 = 787 ⋅113093.

It can be written as a sum of positive squares in only one way, i.e., 19035769 + 104329 = 4363^2 + 323^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19140097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4785023 + ... + 4785026.

Almost surely, 2^19140098 is an apocalyptic number.

19140098 is a deficient number, since it is larger than the sum of its proper divisors (9570052).

19140098 is an equidigital number, since it uses as much as digits as its factorization.

19140098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9570051.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 19140098 is about 4374.9397710140. The cubic root of 19140098 is about 267.4944151162.

The spelling of 19140098 in words is "nineteen million, one hundred forty thousand, ninety-eight".