19916083 has 4 divisors (see below), whose sum is σ = 21726648. Its totient is φ = 18105520.

The previous prime is 19916053. The next prime is 19916087. The reversal of 19916083 is 38061991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38061991 = 11 ⋅3460181.

It is a cyclic number.

It is not a de Polignac number, because 19916083 - 2⁵ = 19916051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19916087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 905266 + ... + 905287.

It is an arithmetic number, because the mean of its divisors is an integer number (5431662).

Almost surely, 2^19916083 is an apocalyptic number.

19916083 is a deficient number, since it is larger than the sum of its proper divisors (1810565).

19916083 is a wasteful number, since it uses less digits than its factorization.

19916083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810564.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 19916083 is about 4462.7438868929. The cubic root of 19916083 is about 271.0615864714.

The spelling of 19916083 in words is "nineteen million, nine hundred sixteen thousand, eighty-three".