338168906399 has 4 divisors (see below), whose sum is σ = 340123640136. Its totient is φ = 336214172664.

The previous prime is 338168906363. The next prime is 338168906423. The reversal of 338168906399 is 993609861833.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 338168906399 - 2¹² = 338168902303 is a prime.

It is a super-2 number, since 2×338168906399² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338168906599) 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 3 ways as a sum of consecutive naturals, for example, 977366609 + ... + 977366954.

It is an arithmetic number, because the mean of its divisors is an integer number (85030910034).

Almost surely, 2^338168906399 is an apocalyptic number.

338168906399 is a deficient number, since it is larger than the sum of its proper divisors (1954733737).

338168906399 is a wasteful number, since it uses less digits than its factorization.

338168906399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954733736.

The product of its (nonzero) digits is 45349632, while the sum is 65.

The spelling of 338168906399 in words is "three hundred thirty-eight billion, one hundred sixty-eight million, nine hundred six thousand, three hundred ninety-nine".