338475981 has 16 divisors (see below), whose sum is σ = 474324480. Its totient is φ = 214280880.

The previous prime is 338475959. The next prime is 338475983. The reversal of 338475981 is 189574833.

It is not a de Polignac number, because 338475981 - 2⁷ = 338475853 is a prime.

It is a super-3 number, since 3×338475981³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 338475981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338475983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8055 + ... + 27236.

It is an arithmetic number, because the mean of its divisors is an integer number (29645280).

Almost surely, 2^338475981 is an apocalyptic number.

It is an amenable number.

338475981 is a deficient number, since it is larger than the sum of its proper divisors (135848499).

338475981 is a wasteful number, since it uses less digits than its factorization.

338475981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35456.

The product of its digits is 725760, while the sum is 48.

The square root of 338475981 is about 18397.7167333341. The cubic root of 338475981 is about 696.9088054572.

The spelling of 338475981 in words is "three hundred thirty-eight million, four hundred seventy-five thousand, nine hundred eighty-one".