1338545189 has 8 divisors (see below), whose sum is σ = 1378421880. Its totient is φ = 1298863296.

The previous prime is 1338545183. The next prime is 1338545203. The reversal of 1338545189 is 9815458331.

It can be written as a sum of positive squares in 4 ways, for example, as 431933089 + 906612100 = 20783^2 + 30110^2 .

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-1338545189 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 (1338545183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34694 + ... + 62295.

It is an arithmetic number, because the mean of its divisors is an integer number (172302735).

Almost surely, 2^1338545189 is an apocalyptic number.

It is an amenable number.

1338545189 is a deficient number, since it is larger than the sum of its proper divisors (39876691).

1338545189 is an equidigital number, since it uses as much as digits as its factorization.

1338545189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97399.

The product of its digits is 518400, while the sum is 47.

The square root of 1338545189 is about 36586.1338351021. The cubic root of 1338545189 is about 1102.0746491220.

The spelling of 1338545189 in words is "one billion, three hundred thirty-eight million, five hundred forty-five thousand, one hundred eighty-nine".