2113940581 has 8 divisors (see below), whose sum is σ = 2160088128. Its totient is φ = 2068248000.

The previous prime is 2113940579. The next prime is 2113940593. The reversal of 2113940581 is 1850493112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2113940581 - 2¹ = 2113940579 is a prime.

It is a super-2 number, since 2×2113940581² = 8937489559997235122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113941581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104340 + ... + 122941.

It is an arithmetic number, because the mean of its divisors is an integer number (270011016).

Almost surely, 2^2113940581 is an apocalyptic number.

It is an amenable number.

2113940581 is a deficient number, since it is larger than the sum of its proper divisors (46147547).

2113940581 is a wasteful number, since it uses less digits than its factorization.

2113940581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227483.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 2113940581 is about 45977.6095616116. The cubic root of 2113940581 is about 1283.4065713118.

The spelling of 2113940581 in words is "two billion, one hundred thirteen million, nine hundred forty thousand, five hundred eighty-one".