1907667603649 has 2 divisors, whose sum is σ = 1907667603650. Its totient is φ = 1907667603648.

The previous prime is 1907667603643. The next prime is 1907667603659. The reversal of 1907667603649 is 9463067667091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1699737987600 + 207929616049 = 1303740^2 + 455993^2 .

It is a cyclic number.

It is not a de Polignac number, because 1907667603649 - 2⁷ = 1907667603521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1907667603643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 953833801824 + 953833801825.

It is an arithmetic number, because the mean of its divisors is an integer number (953833801825).

Almost surely, 2^{1907667603649} is an apocalyptic number.

It is an amenable number.

1907667603649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1907667603649 is an equidigital number, since it uses as much as digits as its factorization.

1907667603649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61725888, while the sum is 64.

The spelling of 1907667603649 in words is "one trillion, nine hundred seven billion, six hundred sixty-seven million, six hundred three thousand, six hundred forty-nine".