1916042688 has 420 divisors, whose sum is σ = 6972315240. Its totient is φ = 517321728.

The previous prime is 1916042677. The next prime is 1916042701. The reversal of 1916042688 is 8862406191.

1916042688 is a `hidden beast` number, since 1 + 91 + 60 + 426 + 88 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 4826106 + ... + 4826502.

Almost surely, 2^1916042688 is an apocalyptic number.

1916042688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1916042688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3486157620).

1916042688 is an abundant number, since it is smaller than the sum of its proper divisors (5056272552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1916042688 is a wasteful number, since it uses less digits than its factorization.

1916042688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1916042688 is about 43772.6248698887. The cubic root of 1916042688 is about 1242.0385061226.

The spelling of 1916042688 in words is "one billion, nine hundred sixteen million, forty-two thousand, six hundred eighty-eight".