2022161540 has 48 divisors (see below), whose sum is σ = 4868798592. Its totient is φ = 691082496.

The previous prime is 2022161513. The next prime is 2022161563. The reversal of 2022161540 is 451612202.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20747 + ... + 66893.

It is an arithmetic number, because the mean of its divisors is an integer number (101433304).

Almost surely, 2^2022161540 is an apocalyptic number.

2022161540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2022161540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2434399296).

2022161540 is an abundant number, since it is smaller than the sum of its proper divisors (2846637052).

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

2022161540 is a wasteful number, since it uses less digits than its factorization.

2022161540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46476 (or 46474 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2022161540 is about 44968.4504958754. The cubic root of 2022161540 is about 1264.5575981151.

Adding to 2022161540 its reverse (451612202), we get a palindrome (2473773742).

The spelling of 2022161540 in words is "two billion, twenty-two million, one hundred sixty-one thousand, five hundred forty".