1338217806 has 16 divisors (see below), whose sum is σ = 2676847824. Its totient is φ = 446003904.

The previous prime is 1338217759. The next prime is 1338217831. The reversal of 1338217806 is 6087128331.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 39330 + ... + 64986.

It is an arithmetic number, because the mean of its divisors is an integer number (167302989).

Almost surely, 2^1338217806 is an apocalyptic number.

1338217806 is an abundant number, since it is smaller than the sum of its proper divisors (1338630018).

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

1338217806 is a wasteful number, since it uses less digits than its factorization.

1338217806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34355.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 1338217806 is about 36581.6594210815. The cubic root of 1338217806 is about 1101.9847928793.

The spelling of 1338217806 in words is "one billion, three hundred thirty-eight million, two hundred seventeen thousand, eight hundred six".