1489949668 has 6 divisors (see below), whose sum is σ = 2607411926. Its totient is φ = 744974832.

The previous prime is 1489949663. The next prime is 1489949687. The reversal of 1489949668 is 8669499841.

It can be written as a sum of positive squares in only one way, i.e., 1021313764 + 468635904 = 31958^2 + 21648^2 .

It is not an unprimeable number, because it can be changed into a prime (1489949663) 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 as a sum of consecutive naturals, namely, 186243705 + ... + 186243712.

Almost surely, 2^1489949668 is an apocalyptic number.

It is an amenable number.

1489949668 is a deficient number, since it is larger than the sum of its proper divisors (1117462258).

1489949668 is a wasteful number, since it uses less digits than its factorization.

1489949668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372487421 (or 372487419 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 64.

The square root of 1489949668 is about 38599.8661655711. The cubic root of 1489949668 is about 1142.1518983165.

The spelling of 1489949668 in words is "one billion, four hundred eighty-nine million, nine hundred forty-nine thousand, six hundred sixty-eight".