4418155985 has 8 divisors (see below), whose sum is σ = 5365664640. Its totient is φ = 3491939824.

The previous prime is 4418155933. The next prime is 4418155999. The reversal of 4418155985 is 5895518144.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4418155985 - 2¹⁸ = 4417893841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5322665 + ... + 5323494.

It is an arithmetic number, because the mean of its divisors is an integer number (670708080).

Almost surely, 2^4418155985 is an apocalyptic number.

It is an amenable number.

4418155985 is a deficient number, since it is larger than the sum of its proper divisors (947508655).

4418155985 is a wasteful number, since it uses less digits than its factorization.

4418155985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10646247.

The product of its digits is 1152000, while the sum is 50.

The square root of 4418155985 is about 66469.2108047027. The cubic root of 4418155985 is about 1640.8933246560.

The spelling of 4418155985 in words is "four billion, four hundred eighteen million, one hundred fifty-five thousand, nine hundred eighty-five".