387533590889 has 2 divisors, whose sum is σ = 387533590890. Its totient is φ = 387533590888.

The previous prime is 387533590849. The next prime is 387533590901. The reversal of 387533590889 is 988095335783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 336777105625 + 50756485264 = 580325^2 + 225292^2 .

It is an emirp because it is prime and its reverse (988095335783) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387533590889 is a prime.

It is not a weakly prime, because it can be changed into another prime (387533590849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193766795444 + 193766795445.

It is an arithmetic number, because the mean of its divisors is an integer number (193766795445).

Almost surely, 2^387533590889 is an apocalyptic number.

It is an amenable number.

387533590889 is a deficient number, since it is larger than the sum of its proper divisors (1).

387533590889 is an equidigital number, since it uses as much as digits as its factorization.

387533590889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 195955200, while the sum is 68.

The spelling of 387533590889 in words is "three hundred eighty-seven billion, five hundred thirty-three million, five hundred ninety thousand, eight hundred eighty-nine".