1996680538 has 16 divisors (see below), whose sum is σ = 3036119040. Its totient is φ = 984732336.

The previous prime is 1996680509. The next prime is 1996680547. The reversal of 1996680538 is 8350866991.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21223 + ... + 66661.

It is an arithmetic number, because the mean of its divisors is an integer number (189757440).

Almost surely, 2^1996680538 is an apocalyptic number.

1996680538 is a deficient number, since it is larger than the sum of its proper divisors (1039438502).

1996680538 is a wasteful number, since it uses less digits than its factorization.

1996680538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45741.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The square root of 1996680538 is about 44684.2314245193. The cubic root of 1996680538 is about 1259.2236205627.

The spelling of 1996680538 in words is "one billion, nine hundred ninety-six million, six hundred eighty thousand, five hundred thirty-eight".