19140098509 has 8 divisors (see below), whose sum is σ = 21882230208. Its totient is φ = 16399924800.

The previous prime is 19140098507. The next prime is 19140098521. The reversal of 19140098509 is 90589004191.

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

It is not a de Polignac number, because 19140098509 - 2¹ = 19140098507 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19140098503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468487 + ... + 507700.

It is an arithmetic number, because the mean of its divisors is an integer number (2735278776).

Almost surely, 2^19140098509 is an apocalyptic number.

It is an amenable number.

19140098509 is a deficient number, since it is larger than the sum of its proper divisors (2742131699).

19140098509 is an equidigital number, since it uses as much as digits as its factorization.

19140098509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978995.

The product of its (nonzero) digits is 116640, while the sum is 46.

The spelling of 19140098509 in words is "nineteen billion, one hundred forty million, ninety-eight thousand, five hundred nine".