1916948919 has 16 divisors (see below), whose sum is σ = 2566832000. Its totient is φ = 1272529440.

The previous prime is 1916948911. The next prime is 1916948939. The reversal of 1916948919 is 9198496191.

It is not a de Polignac number, because 1916948919 - 2³ = 1916948911 is a prime.

It is a super-2 number, since 2×1916948919² = 7349386316110537122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916948911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 817689 + ... + 820029.

It is an arithmetic number, because the mean of its divisors is an integer number (160427000).

Almost surely, 2^1916948919 is an apocalyptic number.

1916948919 is a deficient number, since it is larger than the sum of its proper divisors (649883081).

1916948919 is a wasteful number, since it uses less digits than its factorization.

1916948919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3390.

The product of its digits is 1259712, while the sum is 57.

The square root of 1916948919 is about 43782.9752186852. The cubic root of 1916948919 is about 1242.2342909724.

The spelling of 1916948919 in words is "one billion, nine hundred sixteen million, nine hundred forty-eight thousand, nine hundred nineteen".