1019471898117 has 4 divisors (see below), whose sum is σ = 1359295864160. Its totient is φ = 679647932076.

The previous prime is 1019471898041. The next prime is 1019471898121. The reversal of 1019471898117 is 7118981749101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1019471898117 - 2¹⁹ = 1019471373829 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 (1019471898517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169911983017 + ... + 169911983022.

It is an arithmetic number, because the mean of its divisors is an integer number (339823966040).

Almost surely, 2^{1019471898117} is an apocalyptic number.

It is an amenable number.

1019471898117 is a deficient number, since it is larger than the sum of its proper divisors (339823966043).

1019471898117 is an equidigital number, since it uses as much as digits as its factorization.

1019471898117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339823966042.

The product of its (nonzero) digits is 1016064, while the sum is 57.

The spelling of 1019471898117 in words is "one trillion, nineteen billion, four hundred seventy-one million, eight hundred ninety-eight thousand, one hundred seventeen".