387145133 has 2 divisors, whose sum is σ = 387145134. Its totient is φ = 387145132.

The previous prime is 387145123. The next prime is 387145151. The reversal of 387145133 is 331541783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354117124 + 33028009 = 18818^2 + 5747^2 .

It is a cyclic number.

It is not a de Polignac number, because 387145133 - 2²⁴ = 370367917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 387145093 and 387145102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387145123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193572566 + 193572567.

It is an arithmetic number, because the mean of its divisors is an integer number (193572567).

Almost surely, 2^387145133 is an apocalyptic number.

It is an amenable number.

387145133 is a deficient number, since it is larger than the sum of its proper divisors (1).

387145133 is an equidigital number, since it uses as much as digits as its factorization.

387145133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 387145133 is about 19676.0039896316. The cubic root of 387145133 is about 728.8272487686.

The spelling of 387145133 in words is "three hundred eighty-seven million, one hundred forty-five thousand, one hundred thirty-three".