19421883 has 16 divisors (see below), whose sum is σ = 30987040. Its totient is φ = 11951712.

The previous prime is 19421879. The next prime is 19421911. The reversal of 19421883 is 38812491.

It is not a de Polignac number, because 19421883 - 2² = 19421879 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19421813) 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, 27316 + ... + 28017.

It is an arithmetic number, because the mean of its divisors is an integer number (1936690).

Almost surely, 2^19421883 is an apocalyptic number.

19421883 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

19421883 is a deficient number, since it is larger than the sum of its proper divisors (11565157).

19421883 is a wasteful number, since it uses less digits than its factorization.

19421883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55355 (or 55349 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 19421883 is about 4407.0265485926. The cubic root of 19421883 is about 268.8007304269.

The spelling of 19421883 in words is "nineteen million, four hundred twenty-one thousand, eight hundred eighty-three".