18620361 has 48 divisors (see below), whose sum is σ = 30430400. Its totient is φ = 11337408.

The previous prime is 18620353. The next prime is 18620387. The reversal of 18620361 is 16302681.

18620361 is a `hidden beast` number, since 1 + 8 + 620 + 36 + 1 = 666.

It is not a de Polignac number, because 18620361 - 2³ = 18620353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (18620351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 170775 + ... + 170883.

Almost surely, 2^18620361 is an apocalyptic number.

It is an amenable number.

18620361 is a deficient number, since it is larger than the sum of its proper divisors (11810039).

18620361 is a wasteful number, since it uses less digits than its factorization.

18620361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 18620361 is about 4315.1316318277. The cubic root of 18620361 is about 265.0509502129.

It can be divided in two parts, 18620 and 361, that added together give a palindrome (18981).

The spelling of 18620361 in words is "eighteen million, six hundred twenty thousand, three hundred sixty-one".