7238538513 has 10 divisors (see below), whose sum is σ = 10813125554. Its totient is φ = 4825692288.

The previous prime is 7238538469. The next prime is 7238538529. The reversal of 7238538513 is 3158358327.

7238538513 is a `hidden beast` number, since 7 + 23 + 85 + 38 + 513 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3949745409 + 3288793104 = 62847^2 + 57348^2 .

It is not a de Polignac number, because 7238538513 - 2¹⁶ = 7238472977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7238538553) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 44682256 + ... + 44682417.

Almost surely, 2^7238538513 is an apocalyptic number.

It is an amenable number.

7238538513 is a deficient number, since it is larger than the sum of its proper divisors (3574587041).

7238538513 is an equidigital number, since it uses as much as digits as its factorization.

7238538513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89364685 (or 89364676 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 7238538513 is about 85079.6010392620. The cubic root of 7238538513 is about 1934.4178742868.

The spelling of 7238538513 in words is "seven billion, two hundred thirty-eight million, five hundred thirty-eight thousand, five hundred thirteen".