1919799628 has 12 divisors (see below), whose sum is σ = 3400127640. Its totient is φ = 948334592.

The previous prime is 1919799599. The next prime is 1919799631. The reversal of 1919799628 is 8269979191.

It is a super-2 number, since 2×1919799628² = 7371261223337876768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2890933 + ... + 2891596.

It is an arithmetic number, because the mean of its divisors is an integer number (283343970).

Almost surely, 2^1919799628 is an apocalyptic number.

It is an amenable number.

1919799628 is a deficient number, since it is larger than the sum of its proper divisors (1480328012).

1919799628 is a wasteful number, since it uses less digits than its factorization.

1919799628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5782616 (or 5782614 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 61.

The square root of 1919799628 is about 43815.5181185844. The cubic root of 1919799628 is about 1242.8497646002.

The spelling of 1919799628 in words is "one billion, nine hundred nineteen million, seven hundred ninety-nine thousand, six hundred twenty-eight".