1904919916 has 6 divisors (see below), whose sum is σ = 3333609860. Its totient is φ = 952459956.

The previous prime is 1904919883. The next prime is 1904919931. The reversal of 1904919916 is 6199194091.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1904919916.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238114986 + ... + 238114993.

Almost surely, 2^1904919916 is an apocalyptic number.

It is an amenable number.

1904919916 is a deficient number, since it is larger than the sum of its proper divisors (1428689944).

1904919916 is a wasteful number, since it uses less digits than its factorization.

1904919916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476229983 (or 476229981 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 49.

The square root of 1904919916 is about 43645.3882558054. The cubic root of 1904919916 is about 1239.6304648069.

The spelling of 1904919916 in words is "one billion, nine hundred four million, nine hundred nineteen thousand, nine hundred sixteen".