338735945 has 4 divisors (see below), whose sum is σ = 406483140. Its totient is φ = 270988752.

The previous prime is 338735939. The next prime is 338735951. The reversal of 338735945 is 549537833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549537833 = 13 ⋅42272141.

It is an interprime number because it is at equal distance from previous prime (338735939) and next prime (338735951).

It can be written as a sum of positive squares in 2 ways, for example, as 117440569 + 221295376 = 10837^2 + 14876^2 .

It is a cyclic number.

It is not a de Polignac number, because 338735945 - 2¹⁴ = 338719561 is a prime.

It is a super-2 number, since 2×338735945² = 229484080870086050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 338735945.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33873590 + ... + 33873599.

It is an arithmetic number, because the mean of its divisors is an integer number (101620785).

Almost surely, 2^338735945 is an apocalyptic number.

It is an amenable number.

338735945 is a deficient number, since it is larger than the sum of its proper divisors (67747195).

338735945 is an equidigital number, since it uses as much as digits as its factorization.

338735945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67747194.

The product of its digits is 1360800, while the sum is 47.

The square root of 338735945 is about 18404.7804931219. The cubic root of 338735945 is about 697.0871783682.

The spelling of 338735945 in words is "three hundred thirty-eight million, seven hundred thirty-five thousand, nine hundred forty-five".