1539557132 has 12 divisors (see below), whose sum is σ = 2707765200. Its totient is φ = 765909936.

The previous prime is 1539556987. The next prime is 1539557143. The reversal of 1539557132 is 2317559351.

It is a self number, because there is not a number n which added to its sum of digits gives 1539557132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 966263 + ... + 967854.

It is an arithmetic number, because the mean of its divisors is an integer number (225647100).

Almost surely, 2^1539557132 is an apocalyptic number.

It is an amenable number.

1539557132 is a deficient number, since it is larger than the sum of its proper divisors (1168208068).

1539557132 is a wasteful number, since it uses less digits than its factorization.

1539557132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934320 (or 1934318 counting only the distinct ones).

The product of its digits is 141750, while the sum is 41.

The square root of 1539557132 is about 39237.1906741550. The cubic root of 1539557132 is about 1154.6896418167.

It can be divided in two parts, 15395 and 57132, that added together give a palindrome (72527).

The spelling of 1539557132 in words is "one billion, five hundred thirty-nine million, five hundred fifty-seven thousand, one hundred thirty-two".