1338808890 has 32 divisors (see below), whose sum is σ = 3215028096. Its totient is φ = 356806080.

The previous prime is 1338808859. The next prime is 1338808901. The reversal of 1338808890 is 988088331.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 42744 + ... + 67116.

It is an arithmetic number, because the mean of its divisors is an integer number (100469628).

Almost surely, 2^1338808890 is an apocalyptic number.

1338808890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1338808890 is an abundant number, since it is smaller than the sum of its proper divisors (1876219206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1338808890 is a wasteful number, since it uses less digits than its factorization.

1338808890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26214.

The product of its (nonzero) digits is 331776, while the sum is 48.

The square root of 1338808890 is about 36589.7374956421. The cubic root of 1338808890 is about 1102.1470160237.

The spelling of 1338808890 in words is "one billion, three hundred thirty-eight million, eight hundred eight thousand, eight hundred ninety".