1616120709 has 16 divisors (see below), whose sum is σ = 2515058688. Its totient is φ = 903848112.

The previous prime is 1616120707. The next prime is 1616120719. The reversal of 1616120709 is 9070216161.

It is not a de Polignac number, because 1616120709 - 2¹ = 1616120707 is a prime.

It is a super-2 number, since 2×1616120709² = 5223692292117325362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1616120709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616120707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 817717 + ... + 819690.

It is an arithmetic number, because the mean of its divisors is an integer number (157191168).

Almost surely, 2^1616120709 is an apocalyptic number.

It is an amenable number.

1616120709 is a deficient number, since it is larger than the sum of its proper divisors (898937979).

1616120709 is a wasteful number, since it uses less digits than its factorization.

1616120709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637464.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 1616120709 is about 40201.0038307503. The cubic root of 1616120709 is about 1173.5220794326.

The spelling of 1616120709 in words is "one billion, six hundred sixteen million, one hundred twenty thousand, seven hundred nine".