1919694356 has 24 divisors (see below), whose sum is σ = 3513210624. Its totient is φ = 916102880.

The previous prime is 1919694341. The next prime is 1919694377. The reversal of 1919694356 is 6534969191.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1919694298 and 1919694307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19781 + ... + 65043.

It is an arithmetic number, because the mean of its divisors is an integer number (146383776).

Almost surely, 2^1919694356 is an apocalyptic number.

It is an amenable number.

1919694356 is a deficient number, since it is larger than the sum of its proper divisors (1593516268).

1919694356 is a wasteful number, since it uses less digits than its factorization.

1919694356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45751 (or 45749 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 53.

The square root of 1919694356 is about 43814.3167925736. The cubic root of 1919694356 is about 1242.8270470086.

The spelling of 1919694356 in words is "one billion, nine hundred nineteen million, six hundred ninety-four thousand, three hundred fifty-six".