13649130918 has 96 divisors (see below), whose sum is σ = 31985759520. Its totient is φ = 4190699520.

The previous prime is 13649130917. The next prime is 13649130919. The reversal of 13649130918 is 81903194631.

It is an interprime number because it is at equal distance from previous prime (13649130917) and next prime (13649130919).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13649130917) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4349446 + ... + 4352582.

It is an arithmetic number, because the mean of its divisors is an integer number (333184995).

Almost surely, 2^13649130918 is an apocalyptic number.

13649130918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13649130918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15992879760).

13649130918 is an abundant number, since it is smaller than the sum of its proper divisors (18336628602).

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

13649130918 is a wasteful number, since it uses less digits than its factorization.

13649130918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462 (or 3459 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 13649130918 in words is "thirteen billion, six hundred forty-nine million, one hundred thirty thousand, nine hundred eighteen".