1949161999616 has 576 divisors, whose sum is σ = 4738260172800. Its totient is φ = 791882956800.

The previous prime is 1949161999613. The next prime is 1949161999633. The reversal of 1949161999616 is 6169991619491.

It is a self number, because there is not a number n which added to its sum of digits gives 1949161999616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949161999613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6349061735 + ... + 6349062041.

Almost surely, 2^{1949161999616} is an apocalyptic number.

1949161999616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1949161999616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2369130086400).

1949161999616 is an abundant number, since it is smaller than the sum of its proper divisors (2789098173184).

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

1949161999616 is a wasteful number, since it uses less digits than its factorization.

1949161999616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 492 counting only the distinct ones).

The product of its digits is 51018336, while the sum is 71.

The spelling of 1949161999616 in words is "one trillion, nine hundred forty-nine billion, one hundred sixty-one million, nine hundred ninety-nine thousand, six hundred sixteen".