18440147101 has 4 divisors (see below), whose sum is σ = 18662317632. Its totient is φ = 18217976572.

The previous prime is 18440147071. The next prime is 18440147137. The reversal of 18440147101 is 10174104481.

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: 10174104481 = 29 ⋅350831189.

It is a cyclic number.

It is not a de Polignac number, because 18440147101 - 2¹⁷ = 18440016029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18440147191) 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, 111085141 + ... + 111085306.

It is an arithmetic number, because the mean of its divisors is an integer number (4665579408).

Almost surely, 2^18440147101 is an apocalyptic number.

It is an amenable number.

18440147101 is a deficient number, since it is larger than the sum of its proper divisors (222170531).

18440147101 is an equidigital number, since it uses as much as digits as its factorization.

18440147101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222170530.

The product of its (nonzero) digits is 3584, while the sum is 31.

The spelling of 18440147101 in words is "eighteen billion, four hundred forty million, one hundred forty-seven thousand, one hundred one".