387618485 has 4 divisors (see below), whose sum is σ = 465142188. Its totient is φ = 310094784.

The previous prime is 387618443. The next prime is 387618533. The reversal of 387618485 is 584816783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 283619281 + 103999204 = 16841^2 + 10198^2 .

It is a cyclic number.

It is not a de Polignac number, because 387618485 - 2⁶ = 387618421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38761844 + ... + 38761853.

It is an arithmetic number, because the mean of its divisors is an integer number (116285547).

Almost surely, 2^387618485 is an apocalyptic number.

It is an amenable number.

387618485 is a deficient number, since it is larger than the sum of its proper divisors (77523703).

387618485 is an equidigital number, since it uses as much as digits as its factorization.

387618485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77523702.

The product of its digits is 1290240, while the sum is 50.

The square root of 387618485 is about 19688.0289770205. The cubic root of 387618485 is about 729.1241669851.

The spelling of 387618485 in words is "three hundred eighty-seven million, six hundred eighteen thousand, four hundred eighty-five".