1539085506 has 48 divisors (see below), whose sum is σ = 3643483584. Its totient is φ = 424565568.

The previous prime is 1539085487. The next prime is 1539085507. The reversal of 1539085506 is 6055809351.

1539085506 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1539085507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13536 + ... + 57108.

It is an arithmetic number, because the mean of its divisors is an integer number (75905908).

Almost surely, 2^1539085506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1539085506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1821741792).

1539085506 is an abundant number, since it is smaller than the sum of its proper divisors (2104398078).

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

1539085506 is a wasteful number, since it uses less digits than its factorization.

1539085506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43643 (or 43614 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The square root of 1539085506 is about 39231.1802779371. The cubic root of 1539085506 is about 1154.5717210493.

The spelling of 1539085506 in words is "one billion, five hundred thirty-nine million, eighty-five thousand, five hundred six".