2691944944 has 40 divisors (see below), whose sum is σ = 5647957952. Its totient is φ = 1235554560.

The previous prime is 2691944933. The next prime is 2691944989. The reversal of 2691944944 is 4494491962.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 2691944891 and 2691944900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1897 + ... + 73399.

Almost surely, 2^2691944944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2691944944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2823978976).

2691944944 is an abundant number, since it is smaller than the sum of its proper divisors (2956013008).

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

2691944944 is a wasteful number, since it uses less digits than its factorization.

2691944944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71705 (or 71699 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 52.

The square root of 2691944944 is about 51883.9565183690. The cubic root of 2691944944 is about 1391.0905204344.

The spelling of 2691944944 in words is "two billion, six hundred ninety-one million, nine hundred forty-four thousand, nine hundred forty-four".