1489637860 has 12 divisors (see below), whose sum is σ = 3128239548. Its totient is φ = 595855136.

The previous prime is 1489637837. The next prime is 1489637893. The reversal of 1489637860 is 687369841.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 974438656 + 515199204 = 31216^2 + 22698^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1489637798 and 1489637807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37240927 + ... + 37240966.

It is an arithmetic number, because the mean of its divisors is an integer number (260686629).

Almost surely, 2^1489637860 is an apocalyptic number.

1489637860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1489637860 is an abundant number, since it is smaller than the sum of its proper divisors (1638601688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1489637860 is a wasteful number, since it uses less digits than its factorization.

1489637860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74481902 (or 74481900 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 1489637860 is about 38595.8269765010. The cubic root of 1489637860 is about 1142.0722184560.

The spelling of 1489637860 in words is "one billion, four hundred eighty-nine million, six hundred thirty-seven thousand, eight hundred sixty".