1649490993073 has 64 divisors (see below), whose sum is σ = 2080855941120. Its totient is φ = 1270226304000.

The previous prime is 1649490993067. The next prime is 1649490993109. The reversal of 1649490993073 is 3703990949461.

It is a cyclic number.

It is not a de Polignac number, because 1649490993073 - 2²¹ = 1649488895921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1649490992996 and 1649490993014.

It is not an unprimeable number, because it can be changed into a prime (1649490993043) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1859628636 + ... + 1859629522.

It is an arithmetic number, because the mean of its divisors is an integer number (32513374080).

Almost surely, 2^{1649490993073} is an apocalyptic number.

It is an amenable number.

1649490993073 is a deficient number, since it is larger than the sum of its proper divisors (431364948047).

1649490993073 is a wasteful number, since it uses less digits than its factorization.

1649490993073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798.

The product of its (nonzero) digits is 39680928, while the sum is 64.

The spelling of 1649490993073 in words is "one trillion, six hundred forty-nine billion, four hundred ninety million, nine hundred ninety-three thousand, seventy-three".