19873116 has 18 divisors (see below), whose sum is σ = 50234912. Its totient is φ = 6624360.

The previous prime is 19873111. The next prime is 19873121. The reversal of 19873116 is 61137891.

It is an interprime number because it is at equal distance from previous prime (19873111) and next prime (19873121).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 552031 = 19873116 / (1 + 9 + 8 + 7 + 3 + 1 + 1 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19873111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275980 + ... + 276051.

Almost surely, 2^19873116 is an apocalyptic number.

It is an amenable number.

19873116 is an abundant number, since it is smaller than the sum of its proper divisors (30361796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19873116 is a wasteful number, since it uses less digits than its factorization.

19873116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552041 (or 552036 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 19873116 is about 4457.9273210765. The cubic root of 19873116 is about 270.8665165075.

The spelling of 19873116 in words is "nineteen million, eight hundred seventy-three thousand, one hundred sixteen".