7378944689 has 2 divisors, whose sum is σ = 7378944690. Its totient is φ = 7378944688.

The previous prime is 7378944667. The next prime is 7378944697. The reversal of 7378944689 is 9864498737.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7378810000 + 134689 = 85900^2 + 367^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7378944689 is a prime.

It is a super-3 number, since 3×7378944689³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (7378944889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3689472344 + 3689472345.

It is an arithmetic number, because the mean of its divisors is an integer number (3689472345).

Almost surely, 2^7378944689 is an apocalyptic number.

It is an amenable number.

7378944689 is a deficient number, since it is larger than the sum of its proper divisors (1).

7378944689 is an equidigital number, since it uses as much as digits as its factorization.

7378944689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73156608, while the sum is 65.

The square root of 7378944689 is about 85900.7839836168. The cubic root of 7378944689 is about 1946.8451892473.

The spelling of 7378944689 in words is "seven billion, three hundred seventy-eight million, nine hundred forty-four thousand, six hundred eighty-nine".