387790691471 has 2 divisors, whose sum is σ = 387790691472. Its totient is φ = 387790691470.

The previous prime is 387790691413. The next prime is 387790691521. The reversal of 387790691471 is 174196097783.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387790691471 is a prime.

It is a super-3 number, since 3×387790691471³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387790691411) 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, 193895345735 + 193895345736.

It is an arithmetic number, because the mean of its divisors is an integer number (193895345736).

Almost surely, 2^387790691471 is an apocalyptic number.

387790691471 is a deficient number, since it is larger than the sum of its proper divisors (1).

387790691471 is an equidigital number, since it uses as much as digits as its factorization.

387790691471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16003008, while the sum is 62.

The spelling of 387790691471 in words is "three hundred eighty-seven billion, seven hundred ninety million, six hundred ninety-one thousand, four hundred seventy-one".