7438543169 has 4 divisors (see below), whose sum is σ = 7443567300. Its totient is φ = 7433519040.

The previous prime is 7438543139. The next prime is 7438543199. The reversal of 7438543169 is 9613458347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9613458347 = 857 ⋅11217571.

It is an interprime number because it is at equal distance from previous prime (7438543139) and next prime (7438543199).

It can be written as a sum of positive squares in 2 ways, for example, as 5298092944 + 2140450225 = 72788^2 + 46265^2 .

It is a cyclic number.

It is not a de Polignac number, because 7438543169 - 2⁸ = 7438542913 is a prime.

It is a super-2 number, since 2×7438543169² (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 (7438543139) 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, 2509844 + ... + 2512805.

It is an arithmetic number, because the mean of its divisors is an integer number (1860891825).

Almost surely, 2^7438543169 is an apocalyptic number.

It is an amenable number.

7438543169 is a deficient number, since it is larger than the sum of its proper divisors (5024131).

7438543169 is a wasteful number, since it uses less digits than its factorization.

7438543169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024130.

The product of its digits is 2177280, while the sum is 50.

The square root of 7438543169 is about 86246.9893329616. The cubic root of 7438543169 is about 1952.0725865220.

The spelling of 7438543169 in words is "seven billion, four hundred thirty-eight million, five hundred forty-three thousand, one hundred sixty-nine".