1489785012 has 18 divisors (see below), whose sum is σ = 3765845538. Its totient is φ = 496594992.

The previous prime is 1489785007. The next prime is 1489785019. The reversal of 1489785012 is 2105879841.

It can be written as a sum of positive squares in only one way, i.e., 1181571876 + 308213136 = 34374^2 + 17556^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489785019) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 20691423 + ... + 20691494.

It is an arithmetic number, because the mean of its divisors is an integer number (209213641).

Almost surely, 2^1489785012 is an apocalyptic number.

1489785012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1489785012 is an abundant number, since it is smaller than the sum of its proper divisors (2276060526).

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

1489785012 is a wasteful number, since it uses less digits than its factorization.

1489785012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41382927 (or 41382922 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 1489785012 is about 38597.7332495057. The cubic root of 1489785012 is about 1142.1098232730.

The spelling of 1489785012 in words is "one billion, four hundred eighty-nine million, seven hundred eighty-five thousand, twelve".