1649683814401 has 16 divisors (see below), whose sum is σ = 1905495335296. Its totient is φ = 1398918698496.

The previous prime is 1649683814399. The next prime is 1649683814411. The reversal of 1649683814401 is 1044183869461.

It is a cyclic number.

It is not a de Polignac number, because 1649683814401 - 2¹ = 1649683814399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1649683814411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1389295 + ... + 2286811.

It is an arithmetic number, because the mean of its divisors is an integer number (119093458456).

Almost surely, 2^{1649683814401} is an apocalyptic number.

It is an amenable number.

1649683814401 is a deficient number, since it is larger than the sum of its proper divisors (255811520895).

1649683814401 is an equidigital number, since it uses as much as digits as its factorization.

1649683814401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900328.

The product of its (nonzero) digits is 3981312, while the sum is 55.

The spelling of 1649683814401 in words is "one trillion, six hundred forty-nine billion, six hundred eighty-three million, eight hundred fourteen thousand, four hundred one".