1916648893728 has 48 divisors (see below), whose sum is σ = 5590225942560. Its totient is φ = 638882964288.

The previous prime is 1916648893633. The next prime is 1916648893751. The reversal of 1916648893728 is 8273988466191.

1916648893728 is a `hidden beast` number, since 1 + 91 + 6 + 6 + 488 + 9 + 37 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1109170950 + ... + 1109172677.

It is an arithmetic number, because the mean of its divisors is an integer number (116463040470).

Almost surely, 2^{1916648893728} is an apocalyptic number.

1916648893728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1916648893728 is an abundant number, since it is smaller than the sum of its proper divisors (3673577048832).

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

1916648893728 is a wasteful number, since it uses less digits than its factorization.

1916648893728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2218343646 (or 2218343632 counting only the distinct ones).

The product of its digits is 250822656, while the sum is 72.

The spelling of 1916648893728 in words is "one trillion, nine hundred sixteen billion, six hundred forty-eight million, eight hundred ninety-three thousand, seven hundred twenty-eight".