1549449452 has 12 divisors (see below), whose sum is σ = 2736878760. Its totient is φ = 767484096.

The previous prime is 1549449431. The next prime is 1549449463. The reversal of 1549449452 is 2549449451.

It is a junction number, because it is equal to n+sod(n) for n = 1549449397 and 1549449406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1809677 + ... + 1810532.

It is an arithmetic number, because the mean of its divisors is an integer number (228073230).

Almost surely, 2^1549449452 is an apocalyptic number.

It is an amenable number.

1549449452 is a deficient number, since it is larger than the sum of its proper divisors (1187429308).

1549449452 is a wasteful number, since it uses less digits than its factorization.

1549449452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3620320 (or 3620318 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 47.

The square root of 1549449452 is about 39363.0467824837. The cubic root of 1549449452 is about 1157.1574903514.

Subtracting 1549449452 from its reverse (2549449451), we obtain a palindrome (999999999).

It can be divided in two parts, 15494 and 49452, that added together give a palindrome (64946).

The spelling of 1549449452 in words is "one billion, five hundred forty-nine million, four hundred forty-nine thousand, four hundred fifty-two".