19820963 has 16 divisors (see below), whose sum is σ = 22104576. Its totient is φ = 17677440.

The previous prime is 19820951. The next prime is 19820989. The reversal of 19820963 is 36902891.

It is a cyclic number.

It is not a de Polignac number, because 19820963 - 2¹⁴ = 19804579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19820903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63578 + ... + 63888.

It is an arithmetic number, because the mean of its divisors is an integer number (1381536).

Almost surely, 2^19820963 is an apocalyptic number.

19820963 is a deficient number, since it is larger than the sum of its proper divisors (2283613).

19820963 is a wasteful number, since it uses less digits than its factorization.

19820963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 19820963 is about 4452.0740110650. The cubic root of 19820963 is about 270.6293640168.

The spelling of 19820963 in words is "nineteen million, eight hundred twenty thousand, nine hundred sixty-three".