8406551918 has 16 divisors (see below), whose sum is σ = 13365108864. Its totient is φ = 3952016640.

The previous prime is 8406551903. The next prime is 8406551921. The reversal of 8406551918 is 8191556048.

It is a happy number.

It is a Curzon number.

It is a congruent 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, 91055 + ... + 158442.

It is an arithmetic number, because the mean of its divisors is an integer number (835319304).

Almost surely, 2^8406551918 is an apocalyptic number.

8406551918 is a deficient number, since it is larger than the sum of its proper divisors (4958556946).

8406551918 is a wasteful number, since it uses less digits than its factorization.

8406551918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250507.

The product of its (nonzero) digits is 345600, while the sum is 47.

The square root of 8406551918 is about 91687.2505749845. The cubic root of 8406551918 is about 2033.3210957668.

The spelling of 8406551918 in words is "eight billion, four hundred six million, five hundred fifty-one thousand, nine hundred eighteen".