1606653346 has 4 divisors (see below), whose sum is σ = 2409980022. Its totient is φ = 803326672.

The previous prime is 1606653317. The next prime is 1606653353. The reversal of 1606653346 is 6433566061.

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

It can be written as a sum of positive squares in only one way, i.e., 805140625 + 801512721 = 28375^2 + 28311^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1606653299 and 1606653308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401663335 + ... + 401663338.

Almost surely, 2^1606653346 is an apocalyptic number.

1606653346 is a deficient number, since it is larger than the sum of its proper divisors (803326676).

1606653346 is an equidigital number, since it uses as much as digits as its factorization.

1606653346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803326675.

The product of its (nonzero) digits is 233280, while the sum is 40.

The square root of 1606653346 is about 40083.0805452874. The cubic root of 1606653346 is about 1171.2260617597.

The spelling of 1606653346 in words is "one billion, six hundred six million, six hundred fifty-three thousand, three hundred forty-six".