387642474533 has 2 divisors, whose sum is σ = 387642474534. Its totient is φ = 387642474532.

The previous prime is 387642474521. The next prime is 387642474553. The reversal of 387642474533 is 335474246783.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 348362009284 + 39280465249 = 590222^2 + 198193^2 .

It is a cyclic number.

It is not a de Polignac number, because 387642474533 - 2¹⁶ = 387642408997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387642474553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193821237266 + 193821237267.

It is an arithmetic number, because the mean of its divisors is an integer number (193821237267).

Almost surely, 2^387642474533 is an apocalyptic number.

It is an amenable number.

387642474533 is a deficient number, since it is larger than the sum of its proper divisors (1).

387642474533 is an equidigital number, since it uses as much as digits as its factorization.

387642474533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40642560, while the sum is 56.

The spelling of 387642474533 in words is "three hundred eighty-seven billion, six hundred forty-two million, four hundred seventy-four thousand, five hundred thirty-three".