1549328045 has 18 divisors (see below), whose sum is σ = 1928691882. Its totient is φ = 1194750816.

The previous prime is 1549328029. The next prime is 1549328051. The reversal of 1549328045 is 5408239451.

1549328045 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 178329316 + 1370998729 = 13354^2 + 37027^2 .

It is not a de Polignac number, because 1549328045 - 2⁴ = 1549328029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1549327993 and 1549328011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2552132 + ... + 2552738.

It is an arithmetic number, because the mean of its divisors is an integer number (107149549).

Almost surely, 2^1549328045 is an apocalyptic number.

It is an amenable number.

1549328045 is a deficient number, since it is larger than the sum of its proper divisors (379363837).

1549328045 is an frugal number, since it uses more digits than its factorization.

1549328045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 1549328045 is about 39361.5046079288. The cubic root of 1549328045 is about 1157.1272665648.

The spelling of 1549328045 in words is "one billion, five hundred forty-nine million, three hundred twenty-eight thousand, forty-five".