1338443850 has 24 divisors (see below), whose sum is σ = 3319341120. Its totient is φ = 356918320.

The previous prime is 1338443849. The next prime is 1338443861. The reversal of 1338443850 is 583448331.

It is a junction number, because it is equal to n+sod(n) for n = 1338443799 and 1338443808.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4461330 + ... + 4461629.

It is an arithmetic number, because the mean of its divisors is an integer number (138305880).

Almost surely, 2^1338443850 is an apocalyptic number.

1338443850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1338443850 is an abundant number, since it is smaller than the sum of its proper divisors (1980897270).

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

1338443850 is a wasteful number, since it uses less digits than its factorization.

1338443850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8922974 (or 8922969 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 1338443850 is about 36584.7488716268. The cubic root of 1338443850 is about 1102.0468363487.

The spelling of 1338443850 in words is "one billion, three hundred thirty-eight million, four hundred forty-three thousand, eight hundred fifty".