1606312388 has 12 divisors (see below), whose sum is σ = 2976402492. Its totient is φ = 755911680.

The previous prime is 1606312361. The next prime is 1606312397. The reversal of 1606312388 is 8832136061.

It can be written as a sum of positive squares in 2 ways, for example, as 647295364 + 959017024 = 25442^2 + 30968^2 .

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, 11811053 + ... + 11811188.

It is an arithmetic number, because the mean of its divisors is an integer number (248033541).

Almost surely, 2^1606312388 is an apocalyptic number.

It is an amenable number.

1606312388 is a deficient number, since it is larger than the sum of its proper divisors (1370090104).

1606312388 is a wasteful number, since it uses less digits than its factorization.

1606312388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23622262 (or 23622260 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 1606312388 is about 40078.8271784492. The cubic root of 1606312388 is about 1171.1432048181.

The spelling of 1606312388 in words is "one billion, six hundred six million, three hundred twelve thousand, three hundred eighty-eight".