133818371 has 2 divisors, whose sum is σ = 133818372. Its totient is φ = 133818370.

The previous prime is 133818359. The next prime is 133818473. The reversal of 133818371 is 173818331.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133818371 is a prime.

It is not a weakly prime, because it can be changed into another prime (133818331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66909185 + 66909186.

It is an arithmetic number, because the mean of its divisors is an integer number (66909186).

Almost surely, 2^133818371 is an apocalyptic number.

133818371 is a deficient number, since it is larger than the sum of its proper divisors (1).

133818371 is an equidigital number, since it uses as much as digits as its factorization.

133818371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 133818371 is about 11567.9890646560. The cubic root of 133818371 is about 511.4916868288.

The spelling of 133818371 in words is "one hundred thirty-three million, eight hundred eighteen thousand, three hundred seventy-one".