1990103412 has 48 divisors (see below), whose sum is σ = 5141348352. Its totient is φ = 594058080.

The previous prime is 1990103393. The next prime is 1990103417. The reversal of 1990103412 is 2143010991.

It is a self number, because there is not a number n which added to its sum of digits gives 1990103412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990103417) 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 15 ways as a sum of consecutive naturals, for example, 103668 + ... + 121355.

It is an arithmetic number, because the mean of its divisors is an integer number (107111424).

Almost surely, 2^1990103412 is an apocalyptic number.

1990103412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1990103412 is an abundant number, since it is smaller than the sum of its proper divisors (3151244940).

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

1990103412 is a wasteful number, since it uses less digits than its factorization.

1990103412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225108 (or 225106 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1990103412 is about 44610.5751139794. The cubic root of 1990103412 is about 1257.8394594122.

The spelling of 1990103412 in words is "one billion, nine hundred ninety million, one hundred three thousand, four hundred twelve".