2061949536 has 72 divisors (see below), whose sum is σ = 5883021144. Its totient is φ = 685048320.

The previous prime is 2061949529. The next prime is 2061949583. The reversal of 2061949536 is 6359491602.

2061949536 is a `hidden beast` number, since 20 + 6 + 1 + 94 + 9 + 536 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 2061949491 and 2061949500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76756 + ... + 100076.

It is an arithmetic number, because the mean of its divisors is an integer number (81708627).

Almost surely, 2^2061949536 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 2061949536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2941510572).

2061949536 is an abundant number, since it is smaller than the sum of its proper divisors (3821071608).

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

2061949536 is a wasteful number, since it uses less digits than its factorization.

2061949536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23644 (or 23633 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 2061949536 is about 45408.6944978602. The cubic root of 2061949536 is about 1272.7975892529.

The spelling of 2061949536 in words is "two billion, sixty-one million, nine hundred forty-nine thousand, five hundred thirty-six".