1990456166294 has 8 divisors (see below), whose sum is σ = 2988492986640. Its totient is φ = 994291837416.

The previous prime is 1990456166203. The next prime is 1990456166323. The reversal of 1990456166294 is 4926616540991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468120209 + ... + 468124460.

It is an arithmetic number, because the mean of its divisors is an integer number (373561623330).

Almost surely, 2^{1990456166294} is an apocalyptic number.

1990456166294 is a deficient number, since it is larger than the sum of its proper divisors (998036820346).

1990456166294 is a wasteful number, since it uses less digits than its factorization.

1990456166294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936245734.

The product of its (nonzero) digits is 25194240, while the sum is 62.

The spelling of 1990456166294 in words is "one trillion, nine hundred ninety billion, four hundred fifty-six million, one hundred sixty-six thousand, two hundred ninety-four".