18135101 has 8 divisors (see below), whose sum is σ = 19231680. Its totient is φ = 17052768.

The previous prime is 18135097. The next prime is 18135113. The reversal of 18135101 is 10153181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18135101 - 2² = 18135097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18135151) 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, 881 + ... + 6086.

It is an arithmetic number, because the mean of its divisors is an integer number (2403960).

Almost surely, 2^18135101 is an apocalyptic number.

It is an amenable number.

18135101 is a deficient number, since it is larger than the sum of its proper divisors (1096579).

18135101 is a wasteful number, since it uses less digits than its factorization.

18135101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7123.

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 18135101 is about 4258.5327285346. The cubic root of 18135101 is about 262.7281813361.

Adding to 18135101 its reverse (10153181), we get a palindrome (28288282).

The spelling of 18135101 in words is "eighteen million, one hundred thirty-five thousand, one hundred one".