19499230714189 has 4 divisors (see below), whose sum is σ = 19974821707260. Its totient is φ = 19023639721120.

The previous prime is 19499230714153. The next prime is 19499230714211. The reversal of 19499230714189 is 98141703299491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 427519822500 + 19071710891689 = 653850^2 + 4367117^2 .

It is a cyclic number.

It is not a de Polignac number, because 19499230714189 - 2³⁵ = 19464870975821 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19499230712189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237795496474 + ... + 237795496555.

It is an arithmetic number, because the mean of its divisors is an integer number (4993705426815).

Almost surely, 2^{19499230714189} is an apocalyptic number.

It is an amenable number.

19499230714189 is a deficient number, since it is larger than the sum of its proper divisors (475590993071).

19499230714189 is an equidigital number, since it uses as much as digits as its factorization.

19499230714189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475590993070.

The product of its (nonzero) digits is 35271936, while the sum is 67.

The spelling of 19499230714189 in words is "nineteen trillion, four hundred ninety-nine billion, two hundred thirty million, seven hundred fourteen thousand, one hundred eighty-nine".