7944667541 has 2 divisors, whose sum is σ = 7944667542. Its totient is φ = 7944667540.

The previous prime is 7944667531. The next prime is 7944667553. The reversal of 7944667541 is 1457664497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7943978641 + 688900 = 89129^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 7944667541 - 2¹⁸ = 7944405397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7944667531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3972333770 + 3972333771.

It is an arithmetic number, because the mean of its divisors is an integer number (3972333771).

Almost surely, 2^7944667541 is an apocalyptic number.

It is an amenable number.

7944667541 is a deficient number, since it is larger than the sum of its proper divisors (1).

7944667541 is an equidigital number, since it uses as much as digits as its factorization.

7944667541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 53.

The square root of 7944667541 is about 89132.8645394054. The cubic root of 7944667541 is about 1995.3782898745.

The spelling of 7944667541 in words is "seven billion, nine hundred forty-four million, six hundred sixty-seven thousand, five hundred forty-one".