1639486340993 has 16 divisors (see below), whose sum is σ = 1660274703360. Its totient is φ = 1618838914896.

The previous prime is 1639486340959. The next prime is 1639486341001. The reversal of 1639486340993 is 3990436849361.

It is a cyclic number.

It is not a de Polignac number, because 1639486340993 - 2²² = 1639482146689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1639486340693) 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, 56795798 + ... + 56824656.

It is an arithmetic number, because the mean of its divisors is an integer number (103767168960).

Almost surely, 2^{1639486340993} is an apocalyptic number.

It is an amenable number.

1639486340993 is a deficient number, since it is larger than the sum of its proper divisors (20788362367).

1639486340993 is a wasteful number, since it uses less digits than its factorization.

1639486340993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31276.

The product of its (nonzero) digits is 90699264, while the sum is 65.

The spelling of 1639486340993 in words is "one trillion, six hundred thirty-nine billion, four hundred eighty-six million, three hundred forty thousand, nine hundred ninety-three".