7161138 has 24 divisors (see below), whose sum is σ = 16333200. Its totient is φ = 2261304.

The previous prime is 7161137. The next prime is 7161139. The reversal of 7161138 is 8311617.

It is an interprime number because it is at equal distance from previous prime (7161137) and next prime (7161139).

It is not an unprimeable number, because it can be changed into a prime (7161137) 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 in 11 ways as a sum of consecutive naturals, for example, 10128 + ... + 10811.

It is an arithmetic number, because the mean of its divisors is an integer number (680550).

Almost surely, 2^7161138 is an apocalyptic number.

7161138 is an abundant number, since it is smaller than the sum of its proper divisors (9172062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7161138 is a wasteful number, since it uses less digits than its factorization.

7161138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20966 (or 20963 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 7161138 is about 2676.0302688871. The cubic root of 7161138 is about 192.7498347185.

The spelling of 7161138 in words is "seven million, one hundred sixty-one thousand, one hundred thirty-eight".