819475314413 has 4 divisors (see below), whose sum is σ = 936543216480. Its totient is φ = 702407412348.

The previous prime is 819475314409. The next prime is 819475314421. The reversal of 819475314413 is 314413574918.

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 a cyclic number.

It is not a de Polignac number, because 819475314413 - 2² = 819475314409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819475304413) 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, 58533951023 + ... + 58533951036.

It is an arithmetic number, because the mean of its divisors is an integer number (234135804120).

Almost surely, 2^819475314413 is an apocalyptic number.

It is an amenable number.

819475314413 is a deficient number, since it is larger than the sum of its proper divisors (117067902067).

819475314413 is a wasteful number, since it uses less digits than its factorization.

819475314413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117067902066.

The product of its digits is 1451520, while the sum is 50.

The spelling of 819475314413 in words is "eight hundred nineteen billion, four hundred seventy-five million, three hundred fourteen thousand, four hundred thirteen".