2113718020 has 24 divisors (see below), whose sum is σ = 4445431704. Its totient is φ = 844225536.

The previous prime is 2113717961. The next prime is 2113718021. The reversal of 2113718020 is 208173112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 172081924 + 1941636096 = 13118^2 + 44064^2 .

It is not an unprimeable number, because it can be changed into a prime (2113718021) 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, 65059 + ... + 91978.

It is an arithmetic number, because the mean of its divisors is an integer number (185226321).

Almost surely, 2^2113718020 is an apocalyptic number.

2113718020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2113718020 is an abundant number, since it is smaller than the sum of its proper divisors (2331713684).

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

2113718020 is a wasteful number, since it uses less digits than its factorization.

2113718020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157719 (or 157717 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 2113718020 is about 45975.1891785124. The cubic root of 2113718020 is about 1283.3615296367.

The spelling of 2113718020 in words is "two billion, one hundred thirteen million, seven hundred eighteen thousand, twenty".