7541818 has 4 divisors (see below), whose sum is σ = 11312730. Its totient is φ = 3770908.

The previous prime is 7541791. The next prime is 7541839. The reversal of 7541818 is 8181457.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8181457 = 19 ⋅430603.

It can be written as a sum of positive squares in only one way, i.e., 5004169 + 2537649 = 2237^2 + 1593^2 .

7541818 is a modest number, since divided by 1818 gives 754 as remainder.

It is an unprimeable number.

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, 1885453 + ... + 1885456.

Almost surely, 2^7541818 is an apocalyptic number.

7541818 is a deficient number, since it is larger than the sum of its proper divisors (3770912).

7541818 is a wasteful number, since it uses less digits than its factorization.

7541818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770911.

The product of its digits is 8960, while the sum is 34.

The square root of 7541818 is about 2746.2370618721. The cubic root of 7541818 is about 196.1065122866.

The spelling of 7541818 in words is "seven million, five hundred forty-one thousand, eight hundred eighteen".