2013658638 has 8 divisors (see below), whose sum is σ = 4027317288. Its totient is φ = 671219544.

The previous prime is 2013658561. The next prime is 2013658639. The reversal of 2013658638 is 8368563102.

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

2013658638 is an admirable number.

It is a super-2 number, since 2×2013658638² = 8109642220784030088, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2013658638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013658639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167804881 + ... + 167804892.

It is an arithmetic number, because the mean of its divisors is an integer number (503414661).

Almost surely, 2^2013658638 is an apocalyptic number.

2013658638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2013658638 is a wasteful number, since it uses less digits than its factorization.

2013658638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335609778.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 2013658638 is about 44873.8079284564. The cubic root of 2013658638 is about 1262.7826796749.

The spelling of 2013658638 in words is "two billion, thirteen million, six hundred fifty-eight thousand, six hundred thirty-eight".