1606318487 has 4 divisors (see below), whose sum is σ = 1606556016. Its totient is φ = 1606080960.

The previous prime is 1606318477. The next prime is 1606318507. The reversal of 1606318487 is 7848136061.

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

It is a cyclic number.

It is not a de Polignac number, because 1606318487 - 2²⁸ = 1337883031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606318477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108314 + ... + 122247.

It is an arithmetic number, because the mean of its divisors is an integer number (401639004).

Almost surely, 2^1606318487 is an apocalyptic number.

1606318487 is a deficient number, since it is larger than the sum of its proper divisors (237529).

1606318487 is an equidigital number, since it uses as much as digits as its factorization.

1606318487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237528.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 1606318487 is about 40078.9032659328. The cubic root of 1606318487 is about 1171.1446870522.

The spelling of 1606318487 in words is "one billion, six hundred six million, three hundred eighteen thousand, four hundred eighty-seven".