1990338116 has 24 divisors (see below), whose sum is σ = 3752739480. Its totient is φ = 918196992.

The previous prime is 1990338107. The next prime is 1990338149. The reversal of 1990338116 is 6118330991.

It can be written as a sum of positive squares in 4 ways, for example, as 89378116 + 1900960000 = 9454^2 + 43600^2 .

It is a super-2 number, since 2×1990338116² = 7922891632004858912, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125480 + ... + 140448.

It is an arithmetic number, because the mean of its divisors is an integer number (156364145).

Almost surely, 2^1990338116 is an apocalyptic number.

It is an amenable number.

1990338116 is a deficient number, since it is larger than the sum of its proper divisors (1762401364).

1990338116 is a wasteful number, since it uses less digits than its factorization.

1990338116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17543 (or 17541 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 1990338116 is about 44613.2056234474. The cubic root of 1990338116 is about 1257.8889054772. Note that the first 3 decimals are identical.

The spelling of 1990338116 in words is "one billion, nine hundred ninety million, three hundred thirty-eight thousand, one hundred sixteen".