387748573 has 2 divisors, whose sum is σ = 387748574. Its totient is φ = 387748572.

The previous prime is 387748553. The next prime is 387748577. The reversal of 387748573 is 375847783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257377849 + 130370724 = 16043^2 + 11418^2 .

It is an emirp because it is prime and its reverse (375847783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 387748573 - 2²¹ = 385651421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 387748573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387748577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193874286 + 193874287.

It is an arithmetic number, because the mean of its divisors is an integer number (193874287).

Almost surely, 2^387748573 is an apocalyptic number.

It is an amenable number.

387748573 is a deficient number, since it is larger than the sum of its proper divisors (1).

387748573 is an equidigital number, since it uses as much as digits as its factorization.

387748573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3951360, while the sum is 52.

The square root of 387748573 is about 19691.3324333322. The cubic root of 387748573 is about 729.2057245814.

The spelling of 387748573 in words is "three hundred eighty-seven million, seven hundred forty-eight thousand, five hundred seventy-three".