338945290 has 8 divisors (see below), whose sum is σ = 610101540. Its totient is φ = 135578112.

The previous prime is 338945287. The next prime is 338945311. The reversal of 338945290 is 92549833.

It can be written as a sum of positive squares in 2 ways, for example, as 292854769 + 46090521 = 17113^2 + 6789^2 .

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

It is a super-2 number, since 2×338945290² = 229767819226368200, which contains 22 as substring.

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, 16947255 + ... + 16947274.

Almost surely, 2^338945290 is an apocalyptic number.

338945290 is a deficient number, since it is larger than the sum of its proper divisors (271156250).

338945290 is a wasteful number, since it uses less digits than its factorization.

338945290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33894536.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 338945290 is about 18410.4668599142. The cubic root of 338945290 is about 697.2307529971.

The spelling of 338945290 in words is "three hundred thirty-eight million, nine hundred forty-five thousand, two hundred ninety".