1996226990 has 8 divisors (see below), whose sum is σ = 3593208600. Its totient is φ = 798490792.

The previous prime is 1996226959. The next prime is 1996226993. The reversal of 1996226990 is 996226991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996226993) 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 3 ways as a sum of consecutive naturals, for example, 99811340 + ... + 99811359.

It is an arithmetic number, because the mean of its divisors is an integer number (449151075).

Almost surely, 2^1996226990 is an apocalyptic number.

1996226990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1996226990 is a deficient number, since it is larger than the sum of its proper divisors (1596981610).

1996226990 is a wasteful number, since it uses less digits than its factorization.

1996226990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199622706.

The product of its (nonzero) digits is 944784, while the sum is 53.

The square root of 1996226990 is about 44679.1561021468. The cubic root of 1996226990 is about 1259.1282687037.

Subtracting from 1996226990 its reverse (996226991), we obtain a palindrome (999999999).

The spelling of 1996226990 in words is "one billion, nine hundred ninety-six million, two hundred twenty-six thousand, nine hundred ninety".