1649112677 has 2 divisors, whose sum is σ = 1649112678. Its totient is φ = 1649112676.

The previous prime is 1649112629. The next prime is 1649112679. The reversal of 1649112677 is 7762119461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1354166401 + 294946276 = 36799^2 + 17174^2 .

It is an emirp because it is prime and its reverse (7762119461) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1649112677 is a prime.

Together with 1649112679, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1649112679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824556338 + 824556339.

It is an arithmetic number, because the mean of its divisors is an integer number (824556339).

Almost surely, 2^1649112677 is an apocalyptic number.

It is an amenable number.

1649112677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1649112677 is an equidigital number, since it uses as much as digits as its factorization.

1649112677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 44.

The square root of 1649112677 is about 40609.2683632690. The cubic root of 1649112677 is about 1181.4538904252.

The spelling of 1649112677 in words is "one billion, six hundred forty-nine million, one hundred twelve thousand, six hundred seventy-seven".