1916936957448 has 48 divisors (see below), whose sum is σ = 5262823510620. Its totient is φ = 630225847296.

The previous prime is 1916936957437. The next prime is 1916936957477. The reversal of 1916936957448 is 8447596396191.

It is a happy number.

1916936957448 is a `hidden beast` number, since 1 + 9 + 1 + 6 + 9 + 3 + 6 + 9 + 574 + 48 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1730587608324 + 186349349124 = 1315518^2 + 431682^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182351761 + ... + 182362272.

Almost surely, 2^{1916936957448} is an apocalyptic number.

1916936957448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1916936957448 is an abundant number, since it is smaller than the sum of its proper divisors (3345886553172).

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

1916936957448 is a wasteful number, since it uses less digits than its factorization.

1916936957448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364714118 (or 364714111 counting only the distinct ones).

The product of its digits is 352719360, while the sum is 72.

The spelling of 1916936957448 in words is "one trillion, nine hundred sixteen billion, nine hundred thirty-six million, nine hundred fifty-seven thousand, four hundred forty-eight".