13813804658 has 4 divisors (see below), whose sum is σ = 20720706990. Its totient is φ = 6906902328.

The previous prime is 13813804657. The next prime is 13813804661. The reversal of 13813804658 is 85640831831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11830260289 + 1983544369 = 108767^2 + 44537^2 .

It is not an unprimeable number, because it can be changed into a prime (13813804657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3453451163 + ... + 3453451166.

Almost surely, 2^13813804658 is an apocalyptic number.

13813804658 is a deficient number, since it is larger than the sum of its proper divisors (6906902332).

13813804658 is an equidigital number, since it uses as much as digits as its factorization.

13813804658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6906902331.

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 13813804658 in words is "thirteen billion, eight hundred thirteen million, eight hundred four thousand, six hundred fifty-eight".