2261138613 has 8 divisors (see below), whose sum is σ = 3118812000. Its totient is φ = 1455445488.

The previous prime is 2261138599. The next prime is 2261138639. The reversal of 2261138613 is 3168311622.

2261138613 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2261138613 - 2⁶ = 2261138549 is a prime.

It is a super-2 number, since 2×2261138613² = 10225495654399127538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261138653) 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, 12994963 + ... + 12995136.

It is an arithmetic number, because the mean of its divisors is an integer number (389851500).

Almost surely, 2^2261138613 is an apocalyptic number.

It is an amenable number.

2261138613 is a deficient number, since it is larger than the sum of its proper divisors (857673387).

2261138613 is a wasteful number, since it uses less digits than its factorization.

2261138613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25990131.

The product of its digits is 10368, while the sum is 33.

The square root of 2261138613 is about 47551.4312402897. The cubic root of 2261138613 is about 1312.5294664042.

The spelling of 2261138613 in words is "two billion, two hundred sixty-one million, one hundred thirty-eight thousand, six hundred thirteen".