7539421338 has 24 divisors (see below), whose sum is σ = 16342249248. Its totient is φ = 2512088712.

The previous prime is 7539421319. The next prime is 7539421381. The reversal of 7539421338 is 8331249357.

It is a super-2 number, since 2×7539421338² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7539421293 and 7539421302.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42820 + ... + 130047.

It is an arithmetic number, because the mean of its divisors is an integer number (680927052).

Almost surely, 2^7539421338 is an apocalyptic number.

7539421338 is an abundant number, since it is smaller than the sum of its proper divisors (8802827910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7539421338 is a wasteful number, since it uses less digits than its factorization.

7539421338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175298 (or 175295 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 7539421338 is about 86829.8412874284. The cubic root of 7539421338 is about 1960.8573697663.

The spelling of 7539421338 in words is "seven billion, five hundred thirty-nine million, four hundred twenty-one thousand, three hundred thirty-eight".