1606582490 has 16 divisors (see below), whose sum is σ = 2893310280. Its totient is φ = 642308160.

The previous prime is 1606582451. The next prime is 1606582493. The reversal of 1606582490 is 942856061.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1581891529 + 24690961 = 39773^2 + 4969^2 .

It is a super-2 number, since 2×1606582490² = 5162214594349200200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1606582493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19301 + ... + 59880.

Almost surely, 2^1606582490 is an apocalyptic number.

1606582490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1606582490 is a deficient number, since it is larger than the sum of its proper divisors (1286727790).

1606582490 is a wasteful number, since it uses less digits than its factorization.

1606582490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81217.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1606582490 is about 40082.1966713403. The cubic root of 1606582490 is about 1171.2088438548.

The spelling of 1606582490 in words is "one billion, six hundred six million, five hundred eighty-two thousand, four hundred ninety".