1919205364 has 12 divisors (see below), whose sum is σ = 3359542788. Its totient is φ = 959336000.

The previous prime is 1919205347. The next prime is 1919205373. The reversal of 1919205364 is 4635029191.

It can be written as a sum of positive squares in 2 ways, for example, as 479610000 + 1439595364 = 21900^2 + 37942^2 .

It is a congruent number.

It is an unprimeable number.

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, 50017 + ... + 79624.

It is an arithmetic number, because the mean of its divisors is an integer number (279961899).

Almost surely, 2^1919205364 is an apocalyptic number.

It is an amenable number.

1919205364 is a deficient number, since it is larger than the sum of its proper divisors (1440337424).

1919205364 is a wasteful number, since it uses less digits than its factorization.

1919205364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133346 (or 133344 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 1919205364 is about 43808.7361607248. The cubic root of 1919205364 is about 1242.7215121370.

The spelling of 1919205364 in words is "one billion, nine hundred nineteen million, two hundred five thousand, three hundred sixty-four".