18680101 has 12 divisors (see below), whose sum is σ = 20645856. Its totient is φ = 16888520.

The previous prime is 18680083. The next prime is 18680107. The reversal of 18680101 is 10108681.

It is a happy number.

It is not a de Polignac number, because 18680101 - 2¹³ = 18671909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18680107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31530 + ... + 32116.

It is an arithmetic number, because the mean of its divisors is an integer number (1720488).

Almost surely, 2^18680101 is an apocalyptic number.

18680101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18680101 is a deficient number, since it is larger than the sum of its proper divisors (1965755).

18680101 is a wasteful number, since it uses less digits than its factorization.

18680101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 18680101 is about 4322.0482412856. The cubic root of 18680101 is about 265.3341033383.

Adding to 18680101 its reverse (10108681), we get a palindrome (28788782).

It can be divided in two parts, 18680 and 101, that added together give a palindrome (18781).

The spelling of 18680101 in words is "eighteen million, six hundred eighty thousand, one hundred one".