19163766990736 has 15 divisors (see below), whose sum is σ = 37129832471323. Its totient is φ = 9581874740080.

The previous prime is 19163766990691. The next prime is 19163766990749. The reversal of 19163766990736 is 63709966736191.

The square root of 19163766990736 is 4377644.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 16963371 + ... + 18057781.

Almost surely, 2^{19163766990736} is an apocalyptic number.

19163766990736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

19163766990736 is the 4377644-th square number.

It is an amenable number.

19163766990736 is a deficient number, since it is larger than the sum of its proper divisors (17966065480587).

19163766990736 is an frugal number, since it uses more digits than its factorization.

19163766990736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188830 (or 1094413 counting only the distinct ones).

The product of its (nonzero) digits is 416649744, while the sum is 73.

The spelling of 19163766990736 in words is "nineteen trillion, one hundred sixty-three billion, seven hundred sixty-six million, nine hundred ninety thousand, seven hundred thirty-six".