2068153540 has 12 divisors (see below), whose sum is σ = 4343122476. Its totient is φ = 827261408.

The previous prime is 2068153519. The next prime is 2068153543. The reversal of 2068153540 is 453518602.

It can be written as a sum of positive squares in 2 ways, for example, as 340254916 + 1727898624 = 18446^2 + 41568^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2068153496 and 2068153505.

It is not an unprimeable number, because it can be changed into a prime (2068153543) 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, 51703819 + ... + 51703858.

It is an arithmetic number, because the mean of its divisors is an integer number (361926873).

Almost surely, 2^2068153540 is an apocalyptic number.

2068153540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2068153540 is an abundant number, since it is smaller than the sum of its proper divisors (2274968936).

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

2068153540 is a wasteful number, since it uses less digits than its factorization.

2068153540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103407686 (or 103407684 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 2068153540 is about 45476.9561426444. The cubic root of 2068153540 is about 1274.0728443439.

The spelling of 2068153540 in words is "two billion, sixty-eight million, one hundred fifty-three thousand, five hundred forty".