7158344449 has 27 divisors (see below), whose sum is σ = 7787468169. Its totient is φ = 6579040320.

The previous prime is 7158344399. The next prime is 7158344471. The reversal of 7158344449 is 9444438517.

It is a happy number.

The square root of 7158344449 is 84607.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1868400625 + 5289943824 = 43225^2 + 72732^2 .

It is not a de Polignac number, because 7158344449 - 2¹⁹ = 7157820161 is a prime.

It is a super-2 number, since 2×7158344449² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7158344489) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 98059477 + ... + 98059549.

It is an arithmetic number, because the mean of its divisors is an integer number (288424747).

Almost surely, 2^7158344449 is an apocalyptic number.

7158344449 is the 84607-th square number.

7158344449 is the 42304-th centered octagonal number.

It is an amenable number.

7158344449 is a deficient number, since it is larger than the sum of its proper divisors (629123720).

7158344449 is an frugal number, since it uses more digits than its factorization.

7158344449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 153 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 49.

The cubic root of 7158344449 is about 1927.2476763534.

Multiplying 7158344449 by its sum of digits (49), we get a square (350758878001 = 592249²).

The spelling of 7158344449 in words is "seven billion, one hundred fifty-eight million, three hundred forty-four thousand, four hundred forty-nine".