18468402 has 32 divisors (see below), whose sum is σ = 39595392. Its totient is φ = 5727744.

The previous prime is 18468397. The next prime is 18468407. The reversal of 18468402 is 20486481.

It is an interprime number because it is at equal distance from previous prime (18468397) and next prime (18468407).

It is not an unprimeable number, because it can be changed into a prime (18468407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3298 + ... + 6914.

It is an arithmetic number, because the mean of its divisors is an integer number (1237356).

Almost surely, 2^18468402 is an apocalyptic number.

18468402 is an abundant number, since it is smaller than the sum of its proper divisors (21126990).

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

18468402 is a wasteful number, since it uses less digits than its factorization.

18468402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3682.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 18468402 is about 4297.4878708380. The cubic root of 18468402 is about 264.3279613287.

It can be divided in two parts, 184 and 68402, that added together give a palindrome (68586).

The spelling of 18468402 in words is "eighteen million, four hundred sixty-eight thousand, four hundred two".