8120939619 has 16 divisors (see below), whose sum is σ = 11781056672. Its totient is φ = 4945978368.

The previous prime is 8120939609. The next prime is 8120939633. The reversal of 8120939619 is 9169390218.

It is not a de Polignac number, because 8120939619 - 2¹⁷ = 8120808547 is a prime.

It is a super-2 number, since 2×8120939619² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8120939609) 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, 1069564 + ... + 1077129.

It is an arithmetic number, because the mean of its divisors is an integer number (736316042).

Almost surely, 2^8120939619 is an apocalyptic number.

8120939619 is a deficient number, since it is larger than the sum of its proper divisors (3660117053).

8120939619 is a wasteful number, since it uses less digits than its factorization.

8120939619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146806.

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 8120939619 is about 90116.2561306227. The cubic root of 8120939619 is about 2010.0279377815.

The spelling of 8120939619 in words is "eight billion, one hundred twenty million, nine hundred thirty-nine thousand, six hundred nineteen".