1916054878500 has 1152 divisors, whose sum is σ = 7675652275200. Its totient is φ = 407288217600.

The previous prime is 1916054878499. The next prime is 1916054878531. The reversal of 1916054878500 is 58784506191.

It is a happy number.

1916054878500 is a `hidden beast` number, since 1 + 9 + 1 + 6 + 0 + 54 + 87 + 8 + 500 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1286805756 + ... + 1286807244.

It is an arithmetic number, because the mean of its divisors is an integer number (6662892600).

Almost surely, 2^{1916054878500} is an apocalyptic number.

1916054878500 is a gapful number since it is divisible by the number (10) 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 1916054878500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3837826137600).

1916054878500 is an abundant number, since it is smaller than the sum of its proper divisors (5759597396700).

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

1916054878500 is a wasteful number, since it uses less digits than its factorization.

1916054878500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 54.

The spelling of 1916054878500 in words is "one trillion, nine hundred sixteen billion, fifty-four million, eight hundred seventy-eight thousand, five hundred".