13618374 has 48 divisors (see below), whose sum is σ = 34572096. Its totient is φ = 3536400.

The previous prime is 13618373. The next prime is 13618399. The reversal of 13618374 is 47381631.

It is a super-2 number, since 2×13618374² = 370920220807752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13618373) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1129 + ... + 5339.

It is an arithmetic number, because the mean of its divisors is an integer number (720252).

Almost surely, 2^13618374 is an apocalyptic number.

13618374 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13618374, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17286048).

13618374 is an abundant number, since it is smaller than the sum of its proper divisors (20953722).

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

13618374 is a wasteful number, since it uses less digits than its factorization.

13618374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4241 (or 4234 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 13618374 is about 3690.3081172173. The cubic root of 13618374 is about 238.8040854049.

The spelling of 13618374 in words is "thirteen million, six hundred eighteen thousand, three hundred seventy-four".