133754891 has 2 divisors, whose sum is σ = 133754892. Its totient is φ = 133754890.

The previous prime is 133754791. The next prime is 133754893. The reversal of 133754891 is 198457331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133754891 is a prime.

It is a Sophie Germain prime.

Together with 133754893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133754893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66877445 + 66877446.

It is an arithmetic number, because the mean of its divisors is an integer number (66877446).

Almost surely, 2^133754891 is an apocalyptic number.

133754891 is a deficient number, since it is larger than the sum of its proper divisors (1).

133754891 is an equidigital number, since it uses as much as digits as its factorization.

133754891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 133754891 is about 11565.2449606569. The cubic root of 133754891 is about 511.4107945277.

The spelling of 133754891 in words is "one hundred thirty-three million, seven hundred fifty-four thousand, eight hundred ninety-one".