2047845678 has 32 divisors (see below), whose sum is σ = 4275348480. Its totient is φ = 653167680.

The previous prime is 2047845661. The next prime is 2047845731. The reversal of 2047845678 is 8765487402.

It is a self number, because there is not a number n which added to its sum of digits gives 2047845678.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45300 + ... + 78407.

It is an arithmetic number, because the mean of its divisors is an integer number (133604640).

Almost surely, 2^2047845678 is an apocalyptic number.

2047845678 is an abundant number, since it is smaller than the sum of its proper divisors (2227502802).

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

2047845678 is a wasteful number, since it uses less digits than its factorization.

2047845678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123832.

The product of its (nonzero) digits is 3010560, while the sum is 51.

The square root of 2047845678 is about 45253.1289304950. The cubic root of 2047845678 is about 1269.8889435201. Note that the first 3 decimals are identical.

The spelling of 2047845678 in words is "two billion, forty-seven million, eight hundred forty-five thousand, six hundred seventy-eight".