1990100116 has 18 divisors (see below), whose sum is σ = 3640683242. Its totient is φ = 951786000.

The previous prime is 1990100111. The next prime is 1990100117. The reversal of 1990100116 is 6110010991.

It can be written as a sum of positive squares in only one way, i.e., 1913712516 + 76387600 = 43746^2 + 8740^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990100111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 468135 + ... + 472366.

Almost surely, 2^1990100116 is an apocalyptic number.

It is an amenable number.

1990100116 is a deficient number, since it is larger than the sum of its proper divisors (1650583126).

1990100116 is a wasteful number, since it uses less digits than its factorization.

1990100116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940551 (or 940526 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 28.

The square root of 1990100116 is about 44610.5381720508. The cubic root of 1990100116 is about 1257.8387650026.

The spelling of 1990100116 in words is "one billion, nine hundred ninety million, one hundred thousand, one hundred sixteen".