8158137 has 12 divisors (see below), whose sum is σ = 11779344. Its totient is φ = 5020080.

The previous prime is 8158133. The next prime is 8158187. The reversal of 8158137 is 7318518.

It is not a de Polignac number, because 8158137 - 2² = 8158133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8158098 and 8158107.

It is not an unprimeable number, because it can be changed into a prime (8158133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7539 + ... + 8552.

It is an arithmetic number, because the mean of its divisors is an integer number (981612).

Almost surely, 2^8158137 is an apocalyptic number.

It is an amenable number.

8158137 is a deficient number, since it is larger than the sum of its proper divisors (3621207).

8158137 is a wasteful number, since it uses less digits than its factorization.

8158137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16120 (or 16107 counting only the distinct ones).

The product of its digits is 6720, while the sum is 33.

The square root of 8158137 is about 2856.2452625781. The cubic root of 8158137 is about 201.3092193561.

It can be divided in two parts, 81581 and 37, that added together give a palindrome (81618).

The spelling of 8158137 in words is "eight million, one hundred fifty-eight thousand, one hundred thirty-seven".