18620600101 has 4 divisors (see below), whose sum is σ = 18620986572. Its totient is φ = 18620213632.

The previous prime is 18620600059. The next prime is 18620600137. The reversal of 18620600101 is 10100602681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10100602681 = 13 ⋅776969437.

It can be written as a sum of positive squares in 2 ways, for example, as 4902100225 + 13718499876 = 70015^2 + 117126^2 .

It is a cyclic number.

It is not a de Polignac number, because 18620600101 - 2¹¹ = 18620598053 is a prime.

It is a super-2 number, since 2×18620600101² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18620700101) 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, 108610 + ... + 221443.

It is an arithmetic number, because the mean of its divisors is an integer number (4655246643).

Almost surely, 2^18620600101 is an apocalyptic number.

It is an amenable number.

18620600101 is a deficient number, since it is larger than the sum of its proper divisors (386471).

18620600101 is an equidigital number, since it uses as much as digits as its factorization.

18620600101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386470.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 18620600101 in words is "eighteen billion, six hundred twenty million, six hundred thousand, one hundred one".