19919083 has 2 divisors, whose sum is σ = 19919084. Its totient is φ = 19919082.

The previous prime is 19919057. The next prime is 19919093. The reversal of 19919083 is 38091991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19919083 - 2⁵ = 19919051 is a prime.

It is not a weakly prime, because it can be changed into another prime (19919093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9959541 + 9959542.

It is an arithmetic number, because the mean of its divisors is an integer number (9959542).

Almost surely, 2^19919083 is an apocalyptic number.

19919083 is a deficient number, since it is larger than the sum of its proper divisors (1).

19919083 is an equidigital number, since it uses as much as digits as its factorization.

19919083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 19919083 is about 4463.0799903206. The cubic root of 19919083 is about 271.0751959737.

The spelling of 19919083 in words is "nineteen million, nine hundred nineteen thousand, eighty-three".