18222736141 has 4 divisors (see below), whose sum is σ = 18224538300. Its totient is φ = 18220933984.

The previous prime is 18222736111. The next prime is 18222736159. The reversal of 18222736141 is 14163722281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14163722281 = 41 ⋅345456641.

It can be written as a sum of positive squares in 2 ways, for example, as 6996486025 + 11226250116 = 83645^2 + 105954^2 .

It is a cyclic number.

It is not a de Polignac number, because 18222736141 - 2⁷ = 18222736013 is a prime.

It is a super-2 number, since 2×18222736141² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18222736141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18222736111) 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, 885826 + ... + 906163.

It is an arithmetic number, because the mean of its divisors is an integer number (4556134575).

Almost surely, 2^18222736141 is an apocalyptic number.

It is an amenable number.

18222736141 is a deficient number, since it is larger than the sum of its proper divisors (1802159).

18222736141 is a wasteful number, since it uses less digits than its factorization.

18222736141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802158.

The product of its digits is 32256, while the sum is 37.

The spelling of 18222736141 in words is "eighteen billion, two hundred twenty-two million, seven hundred thirty-six thousand, one hundred forty-one".