1990706307444 has 36 divisors (see below), whose sum is σ = 5033176127616. Its totient is φ = 663422005008.

The previous prime is 1990706307397. The next prime is 1990706307449. The reversal of 1990706307444 is 4447036070991.

1990706307444 is a `hidden beast` number, since 19 + 90 + 70 + 6 + 30 + 7 + 444 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990706307449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5950084 + ... + 6275739.

Almost surely, 2^{1990706307444} is an apocalyptic number.

It is an amenable number.

1990706307444 is an abundant number, since it is smaller than the sum of its proper divisors (3042469820172).

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

1990706307444 is a wasteful number, since it uses less digits than its factorization.

1990706307444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12230356 (or 12230351 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 54.

The spelling of 1990706307444 in words is "one trillion, nine hundred ninety billion, seven hundred six million, three hundred seven thousand, four hundred forty-four".