13897018368 has 132 divisors (see below), whose sum is σ = 41614281800. Its totient is φ = 4632256512.

The previous prime is 13897018351. The next prime is 13897018379. The reversal of 13897018368 is 86381079831.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220908 + ... + 276756.

Almost surely, 2^13897018368 is an apocalyptic number.

13897018368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13897018368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20807140900).

13897018368 is an abundant number, since it is smaller than the sum of its proper divisors (27717263432).

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

13897018368 is an frugal number, since it uses more digits than its factorization.

13897018368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55884 (or 55854 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 13897018368 in words is "thirteen billion, eight hundred ninety-seven million, eighteen thousand, three hundred sixty-eight".