1557484444 has 12 divisors (see below), whose sum is σ = 2885927184. Its totient is φ = 732933824.

The previous prime is 1557484429. The next prime is 1557484457. The reversal of 1557484444 is 4444847551.

It is a junction number, because it is equal to n+sod(n) for n = 1557484394 and 1557484403.

It is a congruent number.

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, 11452024 + ... + 11452159.

It is an arithmetic number, because the mean of its divisors is an integer number (240493932).

Almost surely, 2^1557484444 is an apocalyptic number.

It is an amenable number.

1557484444 is a deficient number, since it is larger than the sum of its proper divisors (1328442740).

1557484444 is a wasteful number, since it uses less digits than its factorization.

1557484444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22904204 (or 22904202 counting only the distinct ones).

The product of its digits is 1433600, while the sum is 46.

The square root of 1557484444 is about 39464.9774356961. The cubic root of 1557484444 is about 1159.1542695948.

The spelling of 1557484444 in words is "one billion, five hundred fifty-seven million, four hundred eighty-four thousand, four hundred forty-four".