1489693813 has 8 divisors (see below), whose sum is σ = 1513506816. Its totient is φ = 1465959600.

The previous prime is 1489693801. The next prime is 1489693819. The reversal of 1489693813 is 3183969841.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1489693813 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 (1489693819) 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 in 7 ways as a sum of consecutive naturals, for example, 19020 + ... + 57802.

It is an arithmetic number, because the mean of its divisors is an integer number (189188352).

Almost surely, 2^1489693813 is an apocalyptic number.

It is an amenable number.

1489693813 is a deficient number, since it is larger than the sum of its proper divisors (23813003).

1489693813 is an equidigital number, since it uses as much as digits as its factorization.

1489693813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39395.

The product of its digits is 1119744, while the sum is 52.

The square root of 1489693813 is about 38596.5518278512. The cubic root of 1489693813 is about 1142.0865175839.

The spelling of 1489693813 in words is "one billion, four hundred eighty-nine million, six hundred ninety-three thousand, eight hundred thirteen".