7738887145 has 48 divisors (see below), whose sum is σ = 10563572880. Its totient is φ = 5434880000.

The previous prime is 7738887083. The next prime is 7738887197. The reversal of 7738887145 is 5417888377.

7738887145 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 271162089 + 7467725056 = 16467^2 + 86416^2 .

It is not a de Polignac number, because 7738887145 - 2⁹ = 7738886633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7738887145.

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 47 ways as a sum of consecutive naturals, for example, 2503761 + ... + 2506849.

It is an arithmetic number, because the mean of its divisors is an integer number (220074435).

Almost surely, 2^7738887145 is an apocalyptic number.

It is an amenable number.

7738887145 is a deficient number, since it is larger than the sum of its proper divisors (2824685735).

7738887145 is a wasteful number, since it uses less digits than its factorization.

7738887145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258 (or 3247 counting only the distinct ones).

The product of its digits is 10536960, while the sum is 58.

The square root of 7738887145 is about 87970.9448909127. The cubic root of 7738887145 is about 1977.9994711798. Note that the first 3 decimals are identical.

The spelling of 7738887145 in words is "seven billion, seven hundred thirty-eight million, eight hundred eighty-seven thousand, one hundred forty-five".