2028163540 has 24 divisors (see below), whose sum is σ = 4586770440. Its totient is φ = 748860288.

The previous prime is 2028163513. The next prime is 2028163541. The reversal of 2028163540 is 453618202.

It can be written as a sum of positive squares in 4 ways, for example, as 43639236 + 1984524304 = 6606^2 + 44548^2 .

It is a super-2 number, since 2×2028163540² = 8226894689970663200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028163541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3900055 + ... + 3900574.

It is an arithmetic number, because the mean of its divisors is an integer number (191115435).

Almost surely, 2^2028163540 is an apocalyptic number.

2028163540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2028163540 is an abundant number, since it is smaller than the sum of its proper divisors (2558606900).

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

2028163540 is a wasteful number, since it uses less digits than its factorization.

2028163540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7800651 (or 7800649 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 2028163540 is about 45035.1367267826. The cubic root of 2028163540 is about 1265.8074781263.

The spelling of 2028163540 in words is "two billion, twenty-eight million, one hundred sixty-three thousand, five hundred forty".