1606404619 has 2 divisors, whose sum is σ = 1606404620. Its totient is φ = 1606404618.

The previous prime is 1606404599. The next prime is 1606404629. The reversal of 1606404619 is 9164046061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1606404619 - 2⁷ = 1606404491 is a prime.

It is a super-2 number, since 2×1606404619² = 5161071599889070322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1606404629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803202309 + 803202310.

It is an arithmetic number, because the mean of its divisors is an integer number (803202310).

Almost surely, 2^1606404619 is an apocalyptic number.

1606404619 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606404619 is an equidigital number, since it uses as much as digits as its factorization.

1606404619 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 1606404619 is about 40079.9777819300. The cubic root of 1606404619 is about 1171.1656192298.

The spelling of 1606404619 in words is "one billion, six hundred six million, four hundred four thousand, six hundred nineteen".