1996218503 has 4 divisors (see below), whose sum is σ = 1996349640. Its totient is φ = 1996087368.

The previous prime is 1996218491. The next prime is 1996218547. The reversal of 1996218503 is 3058126991.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1996218503 is a prime.

It is a super-2 number, since 2×1996218503² = 7969776623439122018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996218583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39200 + ... + 74357.

It is an arithmetic number, because the mean of its divisors is an integer number (499087410).

Almost surely, 2^1996218503 is an apocalyptic number.

1996218503 is a deficient number, since it is larger than the sum of its proper divisors (131137).

1996218503 is a wasteful number, since it uses less digits than its factorization.

1996218503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131136.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 1996218503 is about 44679.0611248715. The cubic root of 1996218503 is about 1259.1264842980.

The spelling of 1996218503 in words is "one billion, nine hundred ninety-six million, two hundred eighteen thousand, five hundred three".