1004061181 has 4 divisors (see below), whose sum is σ = 1004125500. Its totient is φ = 1003996864.

The previous prime is 1004061131. The next prime is 1004061217. The reversal of 1004061181 is 1811604001.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1811604001 = 19 ⋅95347579.

It can be written as a sum of positive squares in 2 ways, for example, as 977125081 + 26936100 = 31259^2 + 5190^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004061181 - 2¹⁹ = 1003536893 is a prime.

It is a super-2 number, since 2×1004061181² = 2016277710382229522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004061131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7845 + ... + 45493.

It is an arithmetic number, because the mean of its divisors is an integer number (251031375).

Almost surely, 2^1004061181 is an apocalyptic number.

It is an amenable number.

1004061181 is a deficient number, since it is larger than the sum of its proper divisors (64319).

1004061181 is an equidigital number, since it uses as much as digits as its factorization.

1004061181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64318.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 1004061181 is about 31686.9244484219. The cubic root of 1004061181 is about 1001.3518985467.

Adding to 1004061181 its reverse (1811604001), we get a palindrome (2815665182).

The spelling of 1004061181 in words is "one billion, four million, sixty-one thousand, one hundred eighty-one".