1916362821808 has 40 divisors (see below), whose sum is σ = 3734280722880. Its totient is φ = 952679154240.

The previous prime is 1916362821803. The next prime is 1916362821959. The reversal of 1916362821808 is 8081282636191.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1916362821803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19503523 + ... + 19601533.

It is an arithmetic number, because the mean of its divisors is an integer number (93357018072).

Almost surely, 2^{1916362821808} is an apocalyptic number.

It is an amenable number.

1916362821808 is a deficient number, since it is larger than the sum of its proper divisors (1817917901072).

1916362821808 is a wasteful number, since it uses less digits than its factorization.

1916362821808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105025 (or 105019 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 55.

The spelling of 1916362821808 in words is "one trillion, nine hundred sixteen billion, three hundred sixty-two million, eight hundred twenty-one thousand, eight hundred eight".