1489609517749 has 4 divisors (see below), whose sum is σ = 1489611969664. Its totient is φ = 1489607065836.

The previous prime is 1489609517729. The next prime is 1489609517779. The reversal of 1489609517749 is 9477159069841.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1489609517749 - 2⁵ = 1489609517717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489609517719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439594 + ... + 1781140.

It is an arithmetic number, because the mean of its divisors is an integer number (372402992416).

Almost surely, 2^{1489609517749} is an apocalyptic number.

It is an amenable number.

1489609517749 is a deficient number, since it is larger than the sum of its proper divisors (2451915).

1489609517749 is a wasteful number, since it uses less digits than its factorization.

1489609517749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451914.

The product of its (nonzero) digits is 137168640, while the sum is 70.

The spelling of 1489609517749 in words is "one trillion, four hundred eighty-nine billion, six hundred nine million, five hundred seventeen thousand, seven hundred forty-nine".