7539449357 has 16 divisors (see below), whose sum is σ = 8727823872. Its totient is φ = 6436677120.

The previous prime is 7539449341. The next prime is 7539449363.

7539449357 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 7539449357 - 2⁴ = 7539449341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7539449557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41348 + ... + 129570.

It is an arithmetic number, because the mean of its divisors is an integer number (545488992).

Almost surely, 2^7539449357 is an apocalyptic number.

It is an amenable number.

7539449357 is a deficient number, since it is larger than the sum of its proper divisors (1188374515).

7539449357 is a wasteful number, since it uses less digits than its factorization.

7539449357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88708.

The product of its digits is 14288400, while the sum is 56.

The square root of 7539449357 is about 86830.0026315789. The cubic root of 7539449357 is about 1960.8597988295.

The spelling of 7539449357 in words is "seven billion, five hundred thirty-nine million, four hundred forty-nine thousand, three hundred fifty-seven".