1616251099 has 2 divisors, whose sum is σ = 1616251100. Its totient is φ = 1616251098.

The previous prime is 1616251097. The next prime is 1616251103. The reversal of 1616251099 is 9901526161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1616251099 - 2¹ = 1616251097 is a prime.

It is a super-2 number, since 2×1616251099² = 5224535230037415602, which contains 22 as substring.

Together with 1616251097, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1616251097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808125549 + 808125550.

It is an arithmetic number, because the mean of its divisors is an integer number (808125550).

Almost surely, 2^1616251099 is an apocalyptic number.

1616251099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616251099 is an equidigital number, since it uses as much as digits as its factorization.

1616251099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 1616251099 is about 40202.6255237142. The cubic root of 1616251099 is about 1173.5536388386.

The spelling of 1616251099 in words is "one billion, six hundred sixteen million, two hundred fifty-one thousand, ninety-nine".