1539475545 has 24 divisors (see below), whose sum is σ = 2616583104. Its totient is φ = 772754176.

The previous prime is 1539475543. The next prime is 1539475559. The reversal of 1539475545 is 5455749351.

It is not a de Polignac number, because 1539475545 - 2¹ = 1539475543 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1539475494 and 1539475503.

It is not an unprimeable number, because it can be changed into a prime (1539475543) 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, 173229 + ... + 181898.

It is an arithmetic number, because the mean of its divisors is an integer number (109024296).

Almost surely, 2^1539475545 is an apocalyptic number.

1539475545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1539475545 is a deficient number, since it is larger than the sum of its proper divisors (1077107559).

1539475545 is a wasteful number, since it uses less digits than its factorization.

1539475545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355169 (or 355152 counting only the distinct ones).

The product of its digits is 1890000, while the sum is 48.

The square root of 1539475545 is about 39236.1509962432. The cubic root of 1539475545 is about 1154.6692443214.

The spelling of 1539475545 in words is "one billion, five hundred thirty-nine million, four hundred seventy-five thousand, five hundred forty-five".