7769809938 has 32 divisors (see below), whose sum is σ = 16982187840. Its totient is φ = 2350338560.

The previous prime is 7769809933. The next prime is 7769809951. The reversal of 7769809938 is 8399089677.

7769809938 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (7769809933) by changing a digit.

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, 65895 + ... + 141002.

It is an arithmetic number, because the mean of its divisors is an integer number (530693370).

Almost surely, 2^7769809938 is an apocalyptic number.

7769809938 is an abundant number, since it is smaller than the sum of its proper divisors (9212377902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7769809938 is a wasteful number, since it uses less digits than its factorization.

7769809938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207482.

The product of its (nonzero) digits is 41150592, while the sum is 66.

The square root of 7769809938 is about 88146.5253881286. The cubic root of 7769809938 is about 1980.6305118806.

The spelling of 7769809938 in words is "seven billion, seven hundred sixty-nine million, eight hundred nine thousand, nine hundred thirty-eight".