34138018 has 4 divisors (see below), whose sum is σ = 51207030. Its totient is φ = 17069008.

The previous prime is 34137991. The next prime is 34138019. The reversal of 34138018 is 81083143.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81083143 = 347 ⋅233669.

It can be written as a sum of positive squares in only one way, i.e., 32455809 + 1682209 = 5697^2 + 1297^2 .

It is not an unprimeable number, because it can be changed into a prime (34138019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8534503 + ... + 8534506.

Almost surely, 2^34138018 is an apocalyptic number.

34138018 is a deficient number, since it is larger than the sum of its proper divisors (17069012).

34138018 is a wasteful number, since it uses less digits than its factorization.

34138018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17069011.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 34138018 is about 5842.7748544677. The cubic root of 34138018 is about 324.3989459022.

The spelling of 34138018 in words is "thirty-four million, one hundred thirty-eight thousand, eighteen".