2081565416 has 16 divisors (see below), whose sum is σ = 4460497440. Its totient is φ = 892099440.

The previous prime is 2081565413. The next prime is 2081565427. The reversal of 2081565416 is 6145651802.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2081565416.

It is not an unprimeable number, because it can be changed into a prime (2081565413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18585350 + ... + 18585461.

It is an arithmetic number, because the mean of its divisors is an integer number (278781090).

Almost surely, 2^2081565416 is an apocalyptic number.

It is an amenable number.

2081565416 is an abundant number, since it is smaller than the sum of its proper divisors (2378932024).

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

2081565416 is a wasteful number, since it uses less digits than its factorization.

2081565416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37170824 (or 37170820 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 2081565416 is about 45624.1757843361. The cubic root of 2081565416 is about 1276.8210126215.

The spelling of 2081565416 in words is "two billion, eighty-one million, five hundred sixty-five thousand, four hundred sixteen".