8168607438 has 64 divisors (see below), whose sum is σ = 17146679808. Its totient is φ = 2591740800.

The previous prime is 8168607437. The next prime is 8168607487. The reversal of 8168607438 is 8347068618.

It is a super-2 number, since 2×8168607438² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8168607437) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2244156 + ... + 2247792.

It is an arithmetic number, because the mean of its divisors is an integer number (267916872).

Almost surely, 2^8168607438 is an apocalyptic number.

8168607438 is an abundant number, since it is smaller than the sum of its proper divisors (8978072370).

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

8168607438 is a wasteful number, since it uses less digits than its factorization.

8168607438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3897.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The square root of 8168607438 is about 90380.3487379862. The cubic root of 8168607438 is about 2013.9530496621.

The spelling of 8168607438 in words is "eight billion, one hundred sixty-eight million, six hundred seven thousand, four hundred thirty-eight".