4165138 has 4 divisors (see below), whose sum is σ = 6247710. Its totient is φ = 2082568.

The previous prime is 4165103. The next prime is 4165157. The reversal of 4165138 is 8315614.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8315614 = 2 ⋅4157807.

It can be written as a sum of positive squares in only one way, i.e., 3179089 + 986049 = 1783^2 + 993^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1041283 + ... + 1041286.

Almost surely, 2^4165138 is an apocalyptic number.

4165138 is a deficient number, since it is larger than the sum of its proper divisors (2082572).

4165138 is a wasteful number, since it uses less digits than its factorization.

4165138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082571.

The product of its digits is 2880, while the sum is 28.

The square root of 4165138 is about 2040.8669726369. The cubic root of 4165138 is about 160.8952162080.

The spelling of 4165138 in words is "four million, one hundred sixty-five thousand, one hundred thirty-eight".