18120601 has 4 divisors (see below), whose sum is σ = 18133632. Its totient is φ = 18107572.

The previous prime is 18120581. The next prime is 18120607. The reversal of 18120601 is 10602181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10602181 = 883 ⋅12007.

It is a cyclic number.

It is not a de Polignac number, because 18120601 - 2⁵ = 18120569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18120607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4141 + ... + 7306.

It is an arithmetic number, because the mean of its divisors is an integer number (4533408).

Almost surely, 2^18120601 is an apocalyptic number.

It is an amenable number.

18120601 is a deficient number, since it is larger than the sum of its proper divisors (13031).

18120601 is a wasteful number, since it uses less digits than its factorization.

18120601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13030.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 18120601 is about 4256.8299237813. The cubic root of 18120601 is about 262.6581408403.

Adding to 18120601 its reverse (10602181), we get a palindrome (28722782).

It can be divided in two parts, 18120 and 601, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 18120601 in words is "eighteen million, one hundred twenty thousand, six hundred one".