8545218890 has 16 divisors (see below), whose sum is σ = 16564578408. Its totient is φ = 3155157696.

The previous prime is 8545218881. The next prime is 8545218923. The reversal of 8545218890 is 988125458.

It can be written as a sum of positive squares in 4 ways, for example, as 5214428521 + 3330790369 = 72211^2 + 57713^2 .

It is a Curzon number.

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, 32866097 + ... + 32866356.

Almost surely, 2^8545218890 is an apocalyptic number.

8545218890 is a deficient number, since it is larger than the sum of its proper divisors (8019359518).

8545218890 is a wasteful number, since it uses less digits than its factorization.

8545218890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65732473.

The product of its (nonzero) digits is 921600, while the sum is 50.

The square root of 8545218890 is about 92440.3531473133. The cubic root of 8545218890 is about 2044.4401310481.

The spelling of 8545218890 in words is "eight billion, five hundred forty-five million, two hundred eighteen thousand, eight hundred ninety".