1489643243 has 16 divisors (see below), whose sum is σ = 1645056000. Its totient is φ = 1337628000.

The previous prime is 1489643219. The next prime is 1489643249. The reversal of 1489643243 is 3423469841.

It is a cyclic number.

It is not a de Polignac number, because 1489643243 - 2¹⁸ = 1489381099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1489643194 and 1489643203.

It is not an unprimeable number, because it can be changed into a prime (1489643249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553046 + ... + 555732.

It is an arithmetic number, because the mean of its divisors is an integer number (102816000).

Almost surely, 2^1489643243 is an apocalyptic number.

1489643243 is a deficient number, since it is larger than the sum of its proper divisors (155412757).

1489643243 is a wasteful number, since it uses less digits than its factorization.

1489643243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3298.

The product of its digits is 497664, while the sum is 44.

The square root of 1489643243 is about 38595.8967119563. The cubic root of 1489643243 is about 1142.0735941298.

The spelling of 1489643243 in words is "one billion, four hundred eighty-nine million, six hundred forty-three thousand, two hundred forty-three".