2021434180 has 12 divisors (see below), whose sum is σ = 4245011820. Its totient is φ = 808573664.

The previous prime is 2021434169. The next prime is 2021434201. The reversal of 2021434180 is 814341202.

It can be written as a sum of positive squares in 2 ways, for example, as 1207701504 + 813732676 = 34752^2 + 28526^2 .

It is a super-2 number, since 2×2021434180² = 8172392288144544800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50535835 + ... + 50535874.

It is an arithmetic number, because the mean of its divisors is an integer number (353750985).

Almost surely, 2^2021434180 is an apocalyptic number.

2021434180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021434180 is an abundant number, since it is smaller than the sum of its proper divisors (2223577640).

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

2021434180 is a wasteful number, since it uses less digits than its factorization.

2021434180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101071718 (or 101071716 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 2021434180 is about 44960.3623206041. The cubic root of 2021434180 is about 1264.4059618752.

Adding to 2021434180 its reverse (814341202), we get a palindrome (2835775382).

The spelling of 2021434180 in words is "two billion, twenty-one million, four hundred thirty-four thousand, one hundred eighty".