19158503495041 has 4 divisors (see below), whose sum is σ = 19158512491332. Its totient is φ = 19158494498752.

The previous prime is 19158503495029. The next prime is 19158503495081. The reversal of 19158503495041 is 14059430585191.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6716411292816 + 12442092202225 = 2591604^2 + 3527335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19158503495041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19158503495081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 693981 + ... + 6228853.

It is an arithmetic number, because the mean of its divisors is an integer number (4789628122833).

Almost surely, 2^{19158503495041} is an apocalyptic number.

It is an amenable number.

19158503495041 is a deficient number, since it is larger than the sum of its proper divisors (8996291).

19158503495041 is an equidigital number, since it uses as much as digits as its factorization.

19158503495041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8996290.

The product of its (nonzero) digits is 3888000, while the sum is 55.

The spelling of 19158503495041 in words is "nineteen trillion, one hundred fifty-eight billion, five hundred three million, four hundred ninety-five thousand, forty-one".