1641277048349 has 2 divisors, whose sum is σ = 1641277048350. Its totient is φ = 1641277048348.

The previous prime is 1641277048319. The next prime is 1641277048399. The reversal of 1641277048349 is 9438407721461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1561705101124 + 79571947225 = 1249682^2 + 282085^2 .

It is a cyclic number.

It is not a de Polignac number, because 1641277048349 - 2⁸ = 1641277048093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1641277048294 and 1641277048303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1641277048319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820638524174 + 820638524175.

It is an arithmetic number, because the mean of its divisors is an integer number (820638524175).

Almost surely, 2^{1641277048349} is an apocalyptic number.

It is an amenable number.

1641277048349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641277048349 is an equidigital number, since it uses as much as digits as its factorization.

1641277048349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 1641277048349 in words is "one trillion, six hundred forty-one billion, two hundred seventy-seven million, forty-eight thousand, three hundred forty-nine".