1990116 has 24 divisors (see below), whose sum is σ = 5159840. Its totient is φ = 663336.

The previous prime is 1990111. The next prime is 1990123. The reversal of 1990116 is 6110991.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1990116.

It is not an unprimeable number, because it can be changed into a prime (1990111) by changing a digit.

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, 9106 + ... + 9321.

2^1990116 is an apocalyptic number.

It is an amenable number.

1990116 is an abundant number, since it is smaller than the sum of its proper divisors (3169724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1990116 is a wasteful number, since it uses less digits than its factorization.

1990116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18440 (or 18432 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 1990116 is about 1410.7147124773. The cubic root of 1990116 is about 125.7842111477.

The spelling of 1990116 in words is "one million, nine hundred ninety thousand, one hundred sixteen".