19831055 has 4 divisors (see below), whose sum is σ = 23797272. Its totient is φ = 15864840.

The previous prime is 19830973. The next prime is 19831067. The reversal of 19831055 is 55013891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55013891 = 6791 ⋅8101.

It is not a de Polignac number, because 19831055 - 2⁸ = 19830799 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 1983101 + ... + 1983110.

It is an arithmetic number, because the mean of its divisors is an integer number (5949318).

Almost surely, 2^19831055 is an apocalyptic number.

19831055 is a deficient number, since it is larger than the sum of its proper divisors (3966217).

19831055 is an equidigital number, since it uses as much as digits as its factorization.

19831055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3966216.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 19831055 is about 4453.2072711698. The cubic root of 19831055 is about 270.6752872503.

The spelling of 19831055 in words is "nineteen million, eight hundred thirty-one thousand, fifty-five".