1489806538 has 24 divisors (see below), whose sum is σ = 2478621600. Its totient is φ = 666046800.

The previous prime is 1489806497. The next prime is 1489806541. The reversal of 1489806538 is 8356089841.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72763 + ... + 90961.

It is an arithmetic number, because the mean of its divisors is an integer number (103275900).

Almost surely, 2^1489806538 is an apocalyptic number.

1489806538 is a deficient number, since it is larger than the sum of its proper divisors (988815062).

1489806538 is a wasteful number, since it uses less digits than its factorization.

1489806538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18334 (or 18273 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 52.

The square root of 1489806538 is about 38598.0120990706. The cubic root of 1489806538 is about 1142.1153240528.

The spelling of 1489806538 in words is "one billion, four hundred eighty-nine million, eight hundred six thousand, five hundred thirty-eight".