18131068 has 6 divisors (see below), whose sum is σ = 31729376. Its totient is φ = 9065532.

The previous prime is 18131051. The next prime is 18131077. The reversal of 18131068 is 86013181.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2266380 + ... + 2266387.

Almost surely, 2^18131068 is an apocalyptic number.

It is an amenable number.

18131068 is a deficient number, since it is larger than the sum of its proper divisors (13598308).

18131068 is a wasteful number, since it uses less digits than its factorization.

18131068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4532771 (or 4532769 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 18131068 is about 4258.0591823036. The cubic root of 18131068 is about 262.7087041666.

The spelling of 18131068 in words is "eighteen million, one hundred thirty-one thousand, sixty-eight".