7138361 has 4 divisors (see below), whose sum is σ = 7228800. Its totient is φ = 7047924.

The previous prime is 7138343. The next prime is 7138363. The reversal of 7138361 is 1638317.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1638317 = 587 ⋅2791.

It is a cyclic number.

It is not a de Polignac number, because 7138361 - 2⁶ = 7138297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7138363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45101 + ... + 45258.

It is an arithmetic number, because the mean of its divisors is an integer number (1807200).

Almost surely, 2^7138361 is an apocalyptic number.

It is an amenable number.

7138361 is a deficient number, since it is larger than the sum of its proper divisors (90439).

7138361 is an equidigital number, since it uses as much as digits as its factorization.

7138361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90438.

The product of its digits is 3024, while the sum is 29.

The square root of 7138361 is about 2671.7711354081. The cubic root of 7138361 is about 192.5452617469.

The spelling of 7138361 in words is "seven million, one hundred thirty-eight thousand, three hundred sixty-one".