7798138485 has 16 divisors (see below), whose sum is σ = 12549147264. Its totient is φ = 4134965312.

The previous prime is 7798138429. The next prime is 7798138507. The reversal of 7798138485 is 5848318977.

7798138485 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 7798138485 - 2⁶ = 7798138421 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1499937 + ... + 1505126.

It is an arithmetic number, because the mean of its divisors is an integer number (784321704).

Almost surely, 2^7798138485 is an apocalyptic number.

It is an amenable number.

7798138485 is a deficient number, since it is larger than the sum of its proper divisors (4751008779).

7798138485 is a wasteful number, since it uses less digits than its factorization.

7798138485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3005244.

The product of its digits is 13547520, while the sum is 60.

The square root of 7798138485 is about 88307.0692810038. The cubic root of 7798138485 is about 1983.0347033526.

The spelling of 7798138485 in words is "seven billion, seven hundred ninety-eight million, one hundred thirty-eight thousand, four hundred eighty-five".