20116619 has 2 divisors, whose sum is σ = 20116620. Its totient is φ = 20116618.

The previous prime is 20116543. The next prime is 20116637. The reversal of 20116619 is 91661102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20116619 - 2¹² = 20112523 is a prime.

It is a super-2 number, since 2×20116619² = 809356719982322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20116919) 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 as a sum of consecutive naturals, namely, 10058309 + 10058310.

It is an arithmetic number, because the mean of its divisors is an integer number (10058310).

Almost surely, 2^20116619 is an apocalyptic number.

20116619 is a deficient number, since it is larger than the sum of its proper divisors (1).

20116619 is an equidigital number, since it uses as much as digits as its factorization.

20116619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 20116619 is about 4485.1554042196. The cubic root of 20116619 is about 271.9683273025.

The spelling of 20116619 in words is "twenty million, one hundred sixteen thousand, six hundred nineteen".