7995744842 has 4 divisors (see below), whose sum is σ = 11993617266. Its totient is φ = 3997872420.

The previous prime is 7995744829. The next prime is 7995744853. The reversal of 7995744842 is 2484475997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2484475997 = 31 ⋅80144387.

It can be written as a sum of positive squares in only one way, i.e., 4695127441 + 3300617401 = 68521^2 + 57451^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998936209 + ... + 1998936212.

Almost surely, 2^7995744842 is an apocalyptic number.

7995744842 is a deficient number, since it is larger than the sum of its proper divisors (3997872424).

7995744842 is a wasteful number, since it uses less digits than its factorization.

7995744842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997872423.

The product of its digits is 20321280, while the sum is 59.

The square root of 7995744842 is about 89418.9288797400. The cubic root of 7995744842 is about 1999.6453406121.

The spelling of 7995744842 in words is "seven billion, nine hundred ninety-five million, seven hundred forty-four thousand, eight hundred forty-two".