338687473 has 2 divisors, whose sum is σ = 338687474. Its totient is φ = 338687472.

The previous prime is 338687471. The next prime is 338687477. The reversal of 338687473 is 374786833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287879089 + 50808384 = 16967^2 + 7128^2 .

It is a cyclic number.

It is not a de Polignac number, because 338687473 - 2¹ = 338687471 is a prime.

It is a super-2 number, since 2×338687473² = 229418408734251458, which contains 22 as substring.

Together with 338687471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (338687471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169343736 + 169343737.

It is an arithmetic number, because the mean of its divisors is an integer number (169343737).

Almost surely, 2^338687473 is an apocalyptic number.

It is an amenable number.

338687473 is a deficient number, since it is larger than the sum of its proper divisors (1).

338687473 is an equidigital number, since it uses as much as digits as its factorization.

338687473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 49.

The square root of 338687473 is about 18403.4636142222. The cubic root of 338687473 is about 697.0539264876.

The spelling of 338687473 in words is "three hundred thirty-eight million, six hundred eighty-seven thousand, four hundred seventy-three".