1661353336 has 8 divisors (see below), whose sum is σ = 3115037520. Its totient is φ = 830676664.

The previous prime is 1661353313. The next prime is 1661353367. The reversal of 1661353336 is 6333531661.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1661353295 and 1661353304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103834576 + ... + 103834591.

It is an arithmetic number, because the mean of its divisors is an integer number (389379690).

Almost surely, 2^1661353336 is an apocalyptic number.

It is an amenable number.

1661353336 is a deficient number, since it is larger than the sum of its proper divisors (1453684184).

1661353336 is a wasteful number, since it uses less digits than its factorization.

1661353336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207669173 (or 207669169 counting only the distinct ones).

The product of its digits is 87480, while the sum is 37.

The square root of 1661353336 is about 40759.7023541635. The cubic root of 1661353336 is about 1184.3698302172.

Adding to 1661353336 its reverse (6333531661), we get a palindrome (7994884997).

The spelling of 1661353336 in words is "one billion, six hundred sixty-one million, three hundred fifty-three thousand, three hundred thirty-six".