1006181641 has 4 divisors (see below), whose sum is σ = 1022676484. Its totient is φ = 989686800.

The previous prime is 1006181633. The next prime is 1006181647. The reversal of 1006181641 is 1461816001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 377175241 + 629006400 = 19421^2 + 25080^2 .

It is a cyclic number.

It is not a de Polignac number, because 1006181641 - 2³ = 1006181633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1006181647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8247330 + ... + 8247451.

It is an arithmetic number, because the mean of its divisors is an integer number (255669121).

Almost surely, 2^1006181641 is an apocalyptic number.

It is an amenable number.

1006181641 is a deficient number, since it is larger than the sum of its proper divisors (16494843).

1006181641 is an equidigital number, since it uses as much as digits as its factorization.

1006181641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16494842.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 1006181641 is about 31720.3663440383. The cubic root of 1006181641 is about 1002.0563156675.

Adding to 1006181641 its reverse (1461816001), we get a palindrome (2467997642).

The spelling of 1006181641 in words is "one billion, six million, one hundred eighty-one thousand, six hundred forty-one".