1919294544 has 40 divisors (see below), whose sum is σ = 5042221920. Its totient is φ = 628920448.

The previous prime is 1919294473. The next prime is 1919294561. The reversal of 1919294544 is 4454929191.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 1919294493 and 1919294502.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 336027 + ... + 341690.

It is an arithmetic number, because the mean of its divisors is an integer number (126055548).

Almost surely, 2^1919294544 is an apocalyptic number.

It is an amenable number.

1919294544 is an abundant number, since it is smaller than the sum of its proper divisors (3122927376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1919294544 is a wasteful number, since it uses less digits than its factorization.

1919294544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677787 (or 677781 counting only the distinct ones).

The product of its digits is 466560, while the sum is 48.

The square root of 1919294544 is about 43809.7539824181. The cubic root of 1919294544 is about 1242.7407604137.

The spelling of 1919294544 in words is "one billion, nine hundred nineteen million, two hundred ninety-four thousand, five hundred forty-four".