7879181609 has 16 divisors (see below), whose sum is σ = 8648942400. Its totient is φ = 7133370816.

The previous prime is 7879181581. The next prime is 7879181621. The reversal of 7879181609 is 9061819787.

It is not a de Polignac number, because 7879181609 - 2¹² = 7879177513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7879181689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328187 + ... + 351375.

It is an arithmetic number, because the mean of its divisors is an integer number (540558900).

Almost surely, 2^7879181609 is an apocalyptic number.

It is an amenable number.

7879181609 is a deficient number, since it is larger than the sum of its proper divisors (769760791).

7879181609 is a wasteful number, since it uses less digits than its factorization.

7879181609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23704.

The product of its (nonzero) digits is 1524096, while the sum is 56.

The square root of 7879181609 is about 88764.7543172401. The cubic root of 7879181609 is about 1989.8806868526.

The spelling of 7879181609 in words is "seven billion, eight hundred seventy-nine million, one hundred eighty-one thousand, six hundred nine".