1539535396 has 24 divisors (see below), whose sum is σ = 3081335040. Its totient is φ = 659315712.

The previous prime is 1539535381. The next prime is 1539535399. The reversal of 1539535396 is 6935359351.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1539535399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19941 + ... + 58963.

It is an arithmetic number, because the mean of its divisors is an integer number (128388960).

Almost surely, 2^1539535396 is an apocalyptic number.

It is an amenable number.

1539535396 is an abundant number, since it is smaller than the sum of its proper divisors (1541799644).

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

1539535396 is a wasteful number, since it uses less digits than its factorization.

1539535396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40443 (or 40441 counting only the distinct ones).

The product of its digits is 1640250, while the sum is 49.

The square root of 1539535396 is about 39236.9136910639. The cubic root of 1539535396 is about 1154.6842076885.

The spelling of 1539535396 in words is "one billion, five hundred thirty-nine million, five hundred thirty-five thousand, three hundred ninety-six".