8437138 has 4 divisors (see below), whose sum is σ = 12655710. Its totient is φ = 4218568.

The previous prime is 8437133. The next prime is 8437153. The reversal of 8437138 is 8317348.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6285049 + 2152089 = 2507^2 + 1467^2 .

It is not an unprimeable number, because it can be changed into a prime (8437133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2109283 + ... + 2109286.

Almost surely, 2^8437138 is an apocalyptic number.

8437138 is a deficient number, since it is larger than the sum of its proper divisors (4218572).

8437138 is a wasteful number, since it uses less digits than its factorization.

8437138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4218571.

The product of its digits is 16128, while the sum is 34.

The square root of 8437138 is about 2904.6751969885. The cubic root of 8437138 is about 203.5784097388.

The spelling of 8437138 in words is "eight million, four hundred thirty-seven thousand, one hundred thirty-eight".