2065315540 has 24 divisors (see below), whose sum is σ = 4338473832. Its totient is φ = 825876480.

The previous prime is 2065315537. The next prime is 2065315559. The reversal of 2065315540 is 455135602.

It can be written as a sum of positive squares in 4 ways, for example, as 158404 + 2065157136 = 398^2 + 45444^2 .

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 7 ways as a sum of consecutive naturals, for example, 61492 + ... + 88948.

It is an arithmetic number, because the mean of its divisors is an integer number (180769743).

Almost surely, 2^2065315540 is an apocalyptic number.

2065315540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2065315540 is an abundant number, since it is smaller than the sum of its proper divisors (2273158292).

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

2065315540 is a wasteful number, since it uses less digits than its factorization.

2065315540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31227 (or 31225 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 2065315540 is about 45445.7428149216. The cubic root of 2065315540 is about 1273.4898002829.

The spelling of 2065315540 in words is "two billion, sixty-five million, three hundred fifteen thousand, five hundred forty".