338987851 has 2 divisors, whose sum is σ = 338987852. Its totient is φ = 338987850.

The previous prime is 338987849. The next prime is 338987879. The reversal of 338987851 is 158789833.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 338987851 - 2¹ = 338987849 is a prime.

It is a super-2 number, since 2×338987851² = 229825526251196402, which contains 22 as substring.

Together with 338987849, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (338987651) by changing a digit.

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 as a sum of consecutive naturals, namely, 169493925 + 169493926.

It is an arithmetic number, because the mean of its divisors is an integer number (169493926).

Almost surely, 2^338987851 is an apocalyptic number.

338987851 is a deficient number, since it is larger than the sum of its proper divisors (1).

338987851 is an equidigital number, since it uses as much as digits as its factorization.

338987851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 52.

The square root of 338987851 is about 18411.6227150135. The cubic root of 338987851 is about 697.2599352840.

The spelling of 338987851 in words is "three hundred thirty-eight million, nine hundred eighty-seven thousand, eight hundred fifty-one".