1916487183825 has 36 divisors (see below), whose sum is σ = 3634561584108. Its totient is φ = 962001408000.

The previous prime is 1916487183803. The next prime is 1916487183847. The reversal of 1916487183825 is 5283817846191.

1916487183825 is a `hidden beast` number, since 1 + 9 + 164 + 87 + 18 + 382 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1916487183803) and next prime (1916487183847).

It can be written as a sum of positive squares in 6 ways, for example, as 12054063681 + 1904433120144 = 109791^2 + 1380012^2 .

It is not a de Polignac number, because 1916487183825 - 2⁹ = 1916487183313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 250517376 + ... + 250525025.

It is an arithmetic number, because the mean of its divisors is an integer number (100960044003).

Almost surely, 2^{1916487183825} is an apocalyptic number.

1916487183825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1916487183825 is a deficient number, since it is larger than the sum of its proper divisors (1718074400283).

1916487183825 is a wasteful number, since it uses less digits than its factorization.

1916487183825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501042434 (or 501042426 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 63.

The spelling of 1916487183825 in words is "one trillion, nine hundred sixteen billion, four hundred eighty-seven million, one hundred eighty-three thousand, eight hundred twenty-five".