2045478858 has 16 divisors (see below), whose sum is σ = 4306271520. Its totient is φ = 645940656.

The previous prime is 2045478833. The next prime is 2045478899. The reversal of 2045478858 is 8588745402.

It is a self number, because there is not a number n which added to its sum of digits gives 2045478858.

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 7 ways as a sum of consecutive naturals, for example, 8971285 + ... + 8971512.

It is an arithmetic number, because the mean of its divisors is an integer number (269141970).

Almost surely, 2^2045478858 is an apocalyptic number.

2045478858 is an abundant number, since it is smaller than the sum of its proper divisors (2260792662).

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

2045478858 is a wasteful number, since it uses less digits than its factorization.

2045478858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17942821.

The product of its (nonzero) digits is 2867200, while the sum is 51.

The square root of 2045478858 is about 45226.9704711691. The cubic root of 2045478858 is about 1269.3995255847.

The spelling of 2045478858 in words is "two billion, forty-five million, four hundred seventy-eight thousand, eight hundred fifty-eight".