1606406419 has 2 divisors, whose sum is σ = 1606406420. Its totient is φ = 1606406418.

The previous prime is 1606406383. The next prime is 1606406441. The reversal of 1606406419 is 9146046061.

It is a strong prime.

It is an emirp because it is prime and its reverse (9146046061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1606406419 - 2²⁹ = 1069535507 is a prime.

It is a super-2 number, since 2×1606406419² = 5161083166008807122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1606406489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803203209 + 803203210.

It is an arithmetic number, because the mean of its divisors is an integer number (803203210).

Almost surely, 2^1606406419 is an apocalyptic number.

1606406419 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606406419 is an equidigital number, since it uses as much as digits as its factorization.

1606406419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 1606406419 is about 40080.0002370259. Note that the first 3 decimals coincide. The cubic root of 1606406419 is about 1171.1660566657.

The spelling of 1606406419 in words is "one billion, six hundred six million, four hundred six thousand, four hundred nineteen".