1557484489 has 8 divisors (see below), whose sum is σ = 1699417440. Its totient is φ = 1415608800.

The previous prime is 1557484463. The next prime is 1557484499. The reversal of 1557484489 is 9844847551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1557484489 - 2⁵ = 1557484457 is a prime.

It is a super-2 number, since 2×1557484489² = 4851515866951182242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1557484429) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 58842 + ... + 81100.

It is an arithmetic number, because the mean of its divisors is an integer number (212427180).

Almost surely, 2^1557484489 is an apocalyptic number.

It is an amenable number.

1557484489 is a deficient number, since it is larger than the sum of its proper divisors (141932951).

1557484489 is a wasteful number, since it uses less digits than its factorization.

1557484489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28631.

The product of its digits is 6451200, while the sum is 55.

The square root of 1557484489 is about 39464.9780058218. The cubic root of 1557484489 is about 1159.1542807585.

The spelling of 1557484489 in words is "one billion, five hundred fifty-seven million, four hundred eighty-four thousand, four hundred eighty-nine".