338643538 has 8 divisors (see below), whose sum is σ = 508048560. Its totient is φ = 169294020.

The previous prime is 338643523. The next prime is 338643577. The reversal of 338643538 is 835346833.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×338643538² = 229358891658314888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 338643494 and 338643503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8773 + ... + 27463.

It is an arithmetic number, because the mean of its divisors is an integer number (63506070).

Almost surely, 2^338643538 is an apocalyptic number.

338643538 is a deficient number, since it is larger than the sum of its proper divisors (169405022).

338643538 is a wasteful number, since it uses less digits than its factorization.

338643538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27752.

The product of its digits is 622080, while the sum is 43.

The square root of 338643538 is about 18402.2699143339. The cubic root of 338643538 is about 697.0237842562.

The spelling of 338643538 in words is "three hundred thirty-eight million, six hundred forty-three thousand, five hundred thirty-eight".