619448871 has 4 divisors (see below), whose sum is σ = 825931832. Its totient is φ = 412965912.

The previous prime is 619448833. The next prime is 619448891. The reversal of 619448871 is 178844916.

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

It is not a de Polignac number, because 619448871 - 2⁷ = 619448743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 619448871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619448821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103241476 + ... + 103241481.

It is an arithmetic number, because the mean of its divisors is an integer number (206482958).

Almost surely, 2^619448871 is an apocalyptic number.

619448871 is a deficient number, since it is larger than the sum of its proper divisors (206482961).

619448871 is a wasteful number, since it uses less digits than its factorization.

619448871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206482960.

The product of its digits is 387072, while the sum is 48.

The square root of 619448871 is about 24888.7297988467. The cubic root of 619448871 is about 852.4491628110.

The spelling of 619448871 in words is "six hundred nineteen million, four hundred forty-eight thousand, eight hundred seventy-one".