1608140099 has 4 divisors (see below), whose sum is σ = 1609797240. Its totient is φ = 1606482960.

The previous prime is 1608140081. The next prime is 1608140123. The reversal of 1608140099 is 9900418061.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9900418061 = 17 ⋅582377533.

It is a cyclic number.

It is not a de Polignac number, because 1608140099 - 2²⁰ = 1607091523 is a prime.

It is a super-2 number, since 2×1608140099² = 5172229156023459602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1608140029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827114 + ... + 829055.

It is an arithmetic number, because the mean of its divisors is an integer number (402449310).

Almost surely, 2^1608140099 is an apocalyptic number.

1608140099 is a deficient number, since it is larger than the sum of its proper divisors (1657141).

1608140099 is an equidigital number, since it uses as much as digits as its factorization.

1608140099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657140.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1608140099 is about 40101.6221492348. The cubic root of 1608140099 is about 1171.5872238853.

The spelling of 1608140099 in words is "one billion, six hundred eight million, one hundred forty thousand, ninety-nine".