1646630630003 has 4 divisors (see below), whose sum is σ = 1686792352728. Its totient is φ = 1606468907280.

The previous prime is 1646630629991. The next prime is 1646630630027. The reversal of 1646630630003 is 3000360366461.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1646630630003 - 2⁶ = 1646630629939 is a prime.

It is a super-2 number, since 2×1646630630003² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1646630633003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20080861301 + ... + 20080861382.

It is an arithmetic number, because the mean of its divisors is an integer number (421698088182).

Almost surely, 2^{1646630630003} is an apocalyptic number.

1646630630003 is a deficient number, since it is larger than the sum of its proper divisors (40161722725).

1646630630003 is an equidigital number, since it uses as much as digits as its factorization.

1646630630003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40161722724.

The product of its (nonzero) digits is 139968, while the sum is 38.

Adding to 1646630630003 its reverse (3000360366461), we get a palindrome (4646990996464).

The spelling of 1646630630003 in words is "one trillion, six hundred forty-six billion, six hundred thirty million, six hundred thirty thousand, three".