1338195859 has 64 divisors (see below), whose sum is σ = 1919877120. Its totient is φ = 898128000.

The previous prime is 1338195853. The next prime is 1338195869. The reversal of 1338195859 is 9585918331.

It is not a de Polignac number, because 1338195859 - 2⁵ = 1338195827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1338195853) 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 63 ways as a sum of consecutive naturals, for example, 1349854 + ... + 1350844.

It is an arithmetic number, because the mean of its divisors is an integer number (29998080).

Almost surely, 2^1338195859 is an apocalyptic number.

1338195859 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1338195859 is a deficient number, since it is larger than the sum of its proper divisors (581681261).

1338195859 is a wasteful number, since it uses less digits than its factorization.

1338195859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112.

The product of its digits is 1166400, while the sum is 52.

The square root of 1338195859 is about 36581.3594471283. The cubic root of 1338195859 is about 1101.9787686003.

The spelling of 1338195859 in words is "one billion, three hundred thirty-eight million, one hundred ninety-five thousand, eight hundred fifty-nine".