7444518149 has 2 divisors, whose sum is σ = 7444518150. Its totient is φ = 7444518148.

The previous prime is 7444518097. The next prime is 7444518163. The reversal of 7444518149 is 9418154447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7427337124 + 17181025 = 86182^2 + 4145^2 .

It is a cyclic number.

It is not a de Polignac number, because 7444518149 - 2³² = 3149550853 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7444518049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3722259074 + 3722259075.

It is an arithmetic number, because the mean of its divisors is an integer number (3722259075).

Almost surely, 2^7444518149 is an apocalyptic number.

It is an amenable number.

7444518149 is a deficient number, since it is larger than the sum of its proper divisors (1).

7444518149 is an equidigital number, since it uses as much as digits as its factorization.

7444518149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 47.

The square root of 7444518149 is about 86281.6211542180. The cubic root of 7444518149 is about 1952.5951114698.

The spelling of 7444518149 in words is "seven billion, four hundred forty-four million, five hundred eighteen thousand, one hundred forty-nine".