18342116 has 24 divisors (see below), whose sum is σ = 36603000. Its totient is φ = 7967232.

The previous prime is 18342101. The next prime is 18342119. The reversal of 18342116 is 61124381.

It can be written as a sum of positive squares in 4 ways, for example, as 23716 + 18318400 = 154^2 + 4280^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (18342119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9491 + ... + 11258.

It is an arithmetic number, because the mean of its divisors is an integer number (1525125).

Almost surely, 2^18342116 is an apocalyptic number.

It is an amenable number.

18342116 is a deficient number, since it is larger than the sum of its proper divisors (18260884).

18342116 is a wasteful number, since it uses less digits than its factorization.

18342116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20783 (or 20781 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 18342116 is about 4282.7696645979. The cubic root of 18342116 is about 263.7240957466.

Adding to 18342116 its reverse (61124381), we get a palindrome (79466497).

The spelling of 18342116 in words is "eighteen million, three hundred forty-two thousand, one hundred sixteen".