7539385069 has 4 divisors (see below), whose sum is σ = 7540986780. Its totient is φ = 7537783360.

The previous prime is 7539385013. The next prime is 7539385109. The reversal of 7539385069 is 9605839357.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9605839357 = 1871 ⋅5134067.

It can be written as a sum of positive squares in 2 ways, for example, as 2382708969 + 5156676100 = 48813^2 + 71810^2 .

It is a cyclic number.

It is not a de Polignac number, because 7539385069 - 2³¹ = 5391901421 is a prime.

It is a super-2 number, since 2×7539385069² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7539385769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793774 + ... + 803215.

It is an arithmetic number, because the mean of its divisors is an integer number (1885246695).

Almost surely, 2^7539385069 is an apocalyptic number.

It is an amenable number.

7539385069 is a deficient number, since it is larger than the sum of its proper divisors (1601711).

7539385069 is a wasteful number, since it uses less digits than its factorization.

7539385069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601710.

The product of its (nonzero) digits is 6123600, while the sum is 55.

The square root of 7539385069 is about 86829.6324361678. The cubic root of 7539385069 is about 1960.8542254732.

The spelling of 7539385069 in words is "seven billion, five hundred thirty-nine million, three hundred eighty-five thousand, sixty-nine".