1601916009 has 16 divisors (see below), whose sum is σ = 2151002880. Its totient is φ = 1060410960.

The previous prime is 1601915981. The next prime is 1601916031. The reversal of 1601916009 is 9006191061.

It is not a de Polignac number, because 1601916009 - 2⁷ = 1601915881 is a prime.

It is a super-2 number, since 2×1601916009² = 5132269799780976162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1601916079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292902 + ... + 298320.

It is an arithmetic number, because the mean of its divisors is an integer number (134437680).

Almost surely, 2^1601916009 is an apocalyptic number.

It is an amenable number.

1601916009 is a deficient number, since it is larger than the sum of its proper divisors (549086871).

1601916009 is a wasteful number, since it uses less digits than its factorization.

1601916009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6100.

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 1601916009 is about 40023.9429466913. The cubic root of 1601916009 is about 1170.0737794076.

The spelling of 1601916009 in words is "one billion, six hundred one million, nine hundred sixteen thousand, nine".