919085904243 has 12 divisors (see below), whose sum is σ = 1429689184560. Its totient is φ = 565591325616.

The previous prime is 919085904241. The next prime is 919085904301. The reversal of 919085904243 is 342409580919.

919085904243 is a `hidden beast` number, since 9 + 1 + 9 + 0 + 8 + 590 + 4 + 2 + 43 = 666.

It is not a de Polignac number, because 919085904243 - 2¹ = 919085904241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 919085904243.

It is not an unprimeable number, because it can be changed into a prime (919085904241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3927717423 + ... + 3927717656.

It is an arithmetic number, because the mean of its divisors is an integer number (119140765380).

Almost surely, 2^919085904243 is an apocalyptic number.

919085904243 is a deficient number, since it is larger than the sum of its proper divisors (510603280317).

919085904243 is a wasteful number, since it uses less digits than its factorization.

919085904243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7855435098 (or 7855435095 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 919085904243 in words is "nine hundred nineteen billion, eighty-five million, nine hundred four thousand, two hundred forty-three".