1909853966990 has 32 divisors (see below), whose sum is σ = 3446188986240. Its totient is φ = 762065670400.

The previous prime is 1909853966981. The next prime is 1909853967011. The reversal of 1909853966990 is 996693589091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6624650 + ... + 6906930.

It is an arithmetic number, because the mean of its divisors is an integer number (107693405820).

Almost surely, 2^{1909853966990} is an apocalyptic number.

1909853966990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1909853966990 is a deficient number, since it is larger than the sum of its proper divisors (1536335019250).

1909853966990 is a wasteful number, since it uses less digits than its factorization.

1909853966990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283948.

The product of its (nonzero) digits is 255091680, while the sum is 74.

The spelling of 1909853966990 in words is "one trillion, nine hundred nine billion, eight hundred fifty-three million, nine hundred sixty-six thousand, nine hundred ninety".