1616769899 has 2 divisors, whose sum is σ = 1616769900. Its totient is φ = 1616769898.

The previous prime is 1616769881. The next prime is 1616769901. The reversal of 1616769899 is 9989676161.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1616769899 is a prime.

It is a super-2 number, since 2×1616769899² = 5227889812624940402, which contains 22 as substring.

Together with 1616769901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1616769809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808384949 + 808384950.

It is an arithmetic number, because the mean of its divisors is an integer number (808384950).

Almost surely, 2^1616769899 is an apocalyptic number.

1616769899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616769899 is an equidigital number, since it uses as much as digits as its factorization.

1616769899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8817984, while the sum is 62.

The square root of 1616769899 is about 40209.0773209234. The cubic root of 1616769899 is about 1173.6791916268.

The spelling of 1616769899 in words is "one billion, six hundred sixteen million, seven hundred sixty-nine thousand, eight hundred ninety-nine".