1649976216196 has 243 divisors, whose sum is σ = 3905430893847. Its totient is φ = 607626502560.

The previous prime is 1649976216191. The next prime is 1649976216263. The reversal of 1649976216196 is 6916126799461.

The square root of 1649976216196 is 1284514.

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

It is not an unprimeable number, because it can be changed into a prime (1649976216191) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 3758487745 + ... + 3758488183.

Almost surely, 2^{1649976216196} is an apocalyptic number.

1649976216196 is the 1284514-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1649976216196

1649976216196 is an abundant number, since it is smaller than the sum of its proper divisors (2255454677651).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1649976216196 is a wasteful number, since it uses less digits than its factorization.

1649976216196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956 (or 478 counting only the distinct ones).

The product of its digits is 52907904, while the sum is 67.

The spelling of 1649976216196 in words is "one trillion, six hundred forty-nine billion, nine hundred seventy-six million, two hundred sixteen thousand, one hundred ninety-six".