7137574649 has 4 divisors (see below), whose sum is σ = 7142356836. Its totient is φ = 7132792464.

The previous prime is 7137574589. The next prime is 7137574657. The reversal of 7137574649 is 9464757317.

It is a happy number.

7137574649 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9464757317 = 1279 ⋅7400123.

It can be written as a sum of positive squares in 2 ways, for example, as 4060875625 + 3076699024 = 63725^2 + 55468^2 .

It is a cyclic number.

It is not a de Polignac number, because 7137574649 - 2¹² = 7137570553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7137574649.

It is not an unprimeable number, because it can be changed into a prime (7137574679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2388854 + ... + 2391839.

It is an arithmetic number, because the mean of its divisors is an integer number (1785589209).

Almost surely, 2^7137574649 is an apocalyptic number.

It is an amenable number.

7137574649 is a deficient number, since it is larger than the sum of its proper divisors (4782187).

7137574649 is a wasteful number, since it uses less digits than its factorization.

7137574649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4782186.

The product of its digits is 4445280, while the sum is 53.

The square root of 7137574649 is about 84484.1680375678. The cubic root of 7137574649 is about 1925.3819132280.

The spelling of 7137574649 in words is "seven billion, one hundred thirty-seven million, five hundred seventy-four thousand, six hundred forty-nine".