8159138 has 32 divisors (see below), whose sum is σ = 13934592. Its totient is φ = 3556800.

The previous prime is 8159131. The next prime is 8159143. The reversal of 8159138 is 8319518.

It is a junction number, because it is equal to n+sod(n) for n = 8159098 and 8159107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8159131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42623 + ... + 42813.

It is an arithmetic number, because the mean of its divisors is an integer number (435456).

Almost surely, 2^8159138 is an apocalyptic number.

8159138 is a deficient number, since it is larger than the sum of its proper divisors (5775454).

8159138 is a wasteful number, since it uses less digits than its factorization.

8159138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290.

The product of its digits is 8640, while the sum is 35.

The square root of 8159138 is about 2856.4204872532. The cubic root of 8159138 is about 201.3174525384.

The spelling of 8159138 in words is "eight million, one hundred fifty-nine thousand, one hundred thirty-eight".