1539643852 has 48 divisors (see below), whose sum is σ = 2832695712. Its totient is φ = 731427840.

The previous prime is 1539643823. The next prime is 1539643873. The reversal of 1539643852 is 2583469351.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2596068 + ... + 2596660.

It is an arithmetic number, because the mean of its divisors is an integer number (59014494).

Almost surely, 2^1539643852 is an apocalyptic number.

It is an amenable number.

1539643852 is a deficient number, since it is larger than the sum of its proper divisors (1293051860).

1539643852 is a wasteful number, since it uses less digits than its factorization.

1539643852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018 (or 1016 counting only the distinct ones).

The product of its digits is 777600, while the sum is 46.

The square root of 1539643852 is about 39238.2957326131. The cubic root of 1539643852 is about 1154.7113218188.

The spelling of 1539643852 in words is "one billion, five hundred thirty-nine million, six hundred forty-three thousand, eight hundred fifty-two".