1919499968 has 28 divisors (see below), whose sum is σ = 3810441960. Its totient is φ = 959388672.

The previous prime is 1919499917. The next prime is 1919499997. The reversal of 1919499968 is 8699949191.

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, 269963 + ... + 276981.

Almost surely, 2^1919499968 is an apocalyptic number.

It is an amenable number.

1919499968 is a deficient number, since it is larger than the sum of its proper divisors (1890941992).

1919499968 is an equidigital number, since it uses as much as digits as its factorization.

1919499968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11304 (or 11294 counting only the distinct ones).

The product of its digits is 11337408, while the sum is 65.

The square root of 1919499968 is about 43812.0984204135. The cubic root of 1919499968 is about 1242.7850960910.

The spelling of 1919499968 in words is "one billion, nine hundred nineteen million, four hundred ninety-nine thousand, nine hundred sixty-eight".