46809091818 has 12 divisors (see below), whose sum is σ = 101419698978. Its totient is φ = 15603030600.

The previous prime is 46809091801. The next prime is 46809091843. The reversal of 46809091818 is 81819090864.

46809091818 is a `hidden beast` number, since 468 + 0 + 90 + 91 + 8 + 1 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26272195569 + 20536896249 = 162087^2 + 143307^2 .

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 5 ways as a sum of consecutive naturals, for example, 1300252533 + ... + 1300252568.

Almost surely, 2^46809091818 is an apocalyptic number.

46809091818 is an abundant number, since it is smaller than the sum of its proper divisors (54610607160).

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

46809091818 is a wasteful number, since it uses less digits than its factorization.

46809091818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600505109 (or 2600505106 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 54.

The spelling of 46809091818 in words is "forty-six billion, eight hundred nine million, ninety-one thousand, eight hundred eighteen".