1673900326849 has 9 divisors (see below), whose sum is σ = 1693035983977. Its totient is φ = 1654978604224.

The previous prime is 1673900326793. The next prime is 1673900326859. The reversal of 1673900326849 is 9486230093761.

It is a happy number.

The square root of 1673900326849 is 1293793.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 545138572225 + 1128761754624 = 738335^2 + 1062432^2 .

It is not a de Polignac number, because 1673900326849 - 2²³ = 1673891938241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1673900326793 and 1673900326802.

It is not an unprimeable number, because it can be changed into a prime (1673900326859) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 115140309 + ... + 115154845.

Almost surely, 2^{1673900326849} is an apocalyptic number.

1673900326849 is the 1293793-rd square number.

1673900326849 is the 646897-th centered octagonal number.

It is an amenable number.

1673900326849 is a deficient number, since it is larger than the sum of its proper divisors (19135657128).

1673900326849 is an frugal number, since it uses more digits than its factorization.

1673900326849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29252 (or 14626 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 58.

The spelling of 1673900326849 in words is "one trillion, six hundred seventy-three billion, nine hundred million, three hundred twenty-six thousand, eight hundred forty-nine".