387907045649 has 2 divisors, whose sum is σ = 387907045650. Its totient is φ = 387907045648.

The previous prime is 387907045621. The next prime is 387907045661. The reversal of 387907045649 is 946540709783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 374124285649 + 13782760000 = 611657^2 + 117400^2 .

It is a cyclic number.

It is not a de Polignac number, because 387907045649 - 2¹⁶ = 387906980113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 387907045591 and 387907045600.

It is not a weakly prime, because it can be changed into another prime (387907045699) 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, 193953522824 + 193953522825.

It is an arithmetic number, because the mean of its divisors is an integer number (193953522825).

Almost surely, 2^387907045649 is an apocalyptic number.

It is an amenable number.

387907045649 is a deficient number, since it is larger than the sum of its proper divisors (1).

387907045649 is an equidigital number, since it uses as much as digits as its factorization.

387907045649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45722880, while the sum is 62.

The spelling of 387907045649 in words is "three hundred eighty-seven billion, nine hundred seven million, forty-five thousand, six hundred forty-nine".