19982455 has 8 divisors (see below), whose sum is σ = 24030000. Its totient is φ = 15951936.

The previous prime is 19982449. The next prime is 19982461. The reversal of 19982455 is 55428991.

It is an interprime number because it is at equal distance from previous prime (19982449) and next prime (19982461).

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

It is a cyclic number.

It is not a de Polignac number, because 19982455 - 2¹⁷ = 19851383 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1510 + ... + 6499.

It is an arithmetic number, because the mean of its divisors is an integer number (3003750).

Almost surely, 2^19982455 is an apocalyptic number.

19982455 is a deficient number, since it is larger than the sum of its proper divisors (4047545).

19982455 is an equidigital number, since it uses as much as digits as its factorization.

19982455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8513.

The product of its digits is 129600, while the sum is 43.

The square root of 19982455 is about 4470.1739339762. The cubic root of 19982455 is about 271.3623643427.

The spelling of 19982455 in words is "nineteen million, nine hundred eighty-two thousand, four hundred fifty-five".