7641138 has 16 divisors (see below), whose sum is σ = 15331680. Its totient is φ = 2538816.

The previous prime is 7641133. The next prime is 7641197. The reversal of 7641138 is 8311467.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7641131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133 + ... + 3911.

It is an arithmetic number, because the mean of its divisors is an integer number (958230).

Almost surely, 2^7641138 is an apocalyptic number.

7641138 is an abundant number, since it is smaller than the sum of its proper divisors (7690542).

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

7641138 is a wasteful number, since it uses less digits than its factorization.

7641138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121.

The product of its digits is 4032, while the sum is 30.

The square root of 7641138 is about 2764.2608415271. The cubic root of 7641138 is about 196.9636185575.

It can be divided in two parts, 76 and 41138, that added together give a palindrome (41214).

The spelling of 7641138 in words is "seven million, six hundred forty-one thousand, one hundred thirty-eight".