1649043619325 has 12 divisors (see below), whose sum is σ = 2044932869268. Its totient is φ = 1319158262400.

The previous prime is 1649043619319. The next prime is 1649043619361. The reversal of 1649043619325 is 5239163409461.

It can be written as a sum of positive squares in 6 ways, for example, as 812700447001 + 836343172324 = 901499^2 + 914518^2 .

It is not a de Polignac number, because 1649043619325 - 2³⁴ = 1631863750141 is a prime.

It is a super-3 number, since 3×1649043619325³ (a number of 38 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1474856 + ... + 2339505.

It is an arithmetic number, because the mean of its divisors is an integer number (170411072439).

Almost surely, 2^{1649043619325} is an apocalyptic number.

It is an amenable number.

1649043619325 is a deficient number, since it is larger than the sum of its proper divisors (395889249943).

1649043619325 is a wasteful number, since it uses less digits than its factorization.

1649043619325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831664 (or 3831659 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 1649043619325 in words is "one trillion, six hundred forty-nine billion, forty-three million, six hundred nineteen thousand, three hundred twenty-five".