1373189885 has 8 divisors (see below), whose sum is σ = 1648089816. Its totient is φ = 1098377280.

The previous prime is 1373189827. The next prime is 1373189887. The reversal of 1373189885 is 5889813731.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 127735204 + 1245454681 = 11302^2 + 35291^2 .

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

It is not a de Polignac number, because 1373189885 - 2¹² = 1373185789 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 (1373189887) 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 7 ways as a sum of consecutive naturals, for example, 20087 + ... + 56123.

It is an arithmetic number, because the mean of its divisors is an integer number (206011227).

Almost surely, 2^1373189885 is an apocalyptic number.

It is an amenable number.

1373189885 is a deficient number, since it is larger than the sum of its proper divisors (274899931).

1373189885 is an equidigital number, since it uses as much as digits as its factorization.

1373189885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43663.

The product of its digits is 1451520, while the sum is 53.

The square root of 1373189885 is about 37056.5768116808. The cubic root of 1373189885 is about 1111.5018722498.

The spelling of 1373189885 in words is "one billion, three hundred seventy-three million, one hundred eighty-nine thousand, eight hundred eighty-five".