7081949185 has 4 divisors (see below), whose sum is σ = 8498339028. Its totient is φ = 5665559344.

The previous prime is 7081949137. The next prime is 7081949261. The reversal of 7081949185 is 5819491807.

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 1189698064 + 5892251121 = 34492^2 + 76761^2 .

It is a cyclic number.

It is not a de Polignac number, because 7081949185 - 2⁷ = 7081949057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 708194914 + ... + 708194923.

It is an arithmetic number, because the mean of its divisors is an integer number (2124584757).

Almost surely, 2^7081949185 is an apocalyptic number.

It is an amenable number.

7081949185 is a deficient number, since it is larger than the sum of its proper divisors (1416389843).

7081949185 is a wasteful number, since it uses less digits than its factorization.

7081949185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416389842.

The product of its (nonzero) digits is 725760, while the sum is 52.

The square root of 7081949185 is about 84154.3176848342. The cubic root of 7081949185 is about 1920.3671520995.

The spelling of 7081949185 in words is "seven billion, eighty-one million, nine hundred forty-nine thousand, one hundred eighty-five".