1668500337 has 16 divisors (see below), whose sum is σ = 2577307520. Its totient is φ = 940367232.

The previous prime is 1668500291. The next prime is 1668500357. The reversal of 1668500337 is 7330058661.

It is not a de Polignac number, because 1668500337 - 2⁸ = 1668500081 is a prime.

It is a super-2 number, since 2×1668500337² = 5567786749138227138, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1668500295 and 1668500304.

It is not an unprimeable number, because it can be changed into a prime (1668500357) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 542662 + ... + 545727.

It is an arithmetic number, because the mean of its divisors is an integer number (161081720).

Almost surely, 2^1668500337 is an apocalyptic number.

It is an amenable number.

1668500337 is a deficient number, since it is larger than the sum of its proper divisors (908807183).

1668500337 is a wasteful number, since it uses less digits than its factorization.

1668500337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088472.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 1668500337 is about 40847.2806561220. The cubic root of 1668500337 is about 1186.0657534494.

Adding to 1668500337 its reverse (7330058661), we get a palindrome (8998558998).

The spelling of 1668500337 in words is "one billion, six hundred sixty-eight million, five hundred thousand, three hundred thirty-seven".