1489723903 has 4 divisors (see below), whose sum is σ = 1499722200. Its totient is φ = 1479725608.

The previous prime is 1489723901. The next prime is 1489723909. The reversal of 1489723903 is 3093279841.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1489723903 - 2¹ = 1489723901 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 (1489723901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4998925 + ... + 4999222.

It is an arithmetic number, because the mean of its divisors is an integer number (374930550).

Almost surely, 2^1489723903 is an apocalyptic number.

1489723903 is a deficient number, since it is larger than the sum of its proper divisors (9998297).

1489723903 is an equidigital number, since it uses as much as digits as its factorization.

1489723903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9998296.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 1489723903 is about 38596.9416275435. The cubic root of 1489723903 is about 1142.0942071175.

The spelling of 1489723903 in words is "one billion, four hundred eighty-nine million, seven hundred twenty-three thousand, nine hundred three".