2061638112 has 48 divisors (see below), whose sum is σ = 5464368000. Its totient is φ = 680537472.

The previous prime is 2061638107. The next prime is 2061638171. The reversal of 2061638112 is 2118361602.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 2061638112.

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, 94362 + ... + 114137.

It is an arithmetic number, because the mean of its divisors is an integer number (113841000).

Almost surely, 2^2061638112 is an apocalyptic number.

It is an amenable number.

2061638112 is an abundant number, since it is smaller than the sum of its proper divisors (3402729888).

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

2061638112 is a wasteful number, since it uses less digits than its factorization.

2061638112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208615 (or 208607 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 2061638112 is about 45405.2652453435. The cubic root of 2061638112 is about 1272.7335075563.

Adding to 2061638112 its reverse (2118361602), we get a palindrome (4179999714).

The spelling of 2061638112 in words is "two billion, sixty-one million, six hundred thirty-eight thousand, one hundred twelve".