18552222037 has 8 divisors (see below), whose sum is σ = 18954091800. Its totient is φ = 18154650624.

The previous prime is 18552221977. The next prime is 18552222047. The reversal of 18552222037 is 73022225581.

It can be written as a sum of positive squares in 4 ways, for example, as 499343716 + 18052878321 = 22346^2 + 134361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18552222037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18552221987 and 18552222005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18552222047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1065862 + ... + 1083127.

It is an arithmetic number, because the mean of its divisors is an integer number (2369261475).

Almost surely, 2^18552222037 is an apocalyptic number.

It is an amenable number.

18552222037 is a deficient number, since it is larger than the sum of its proper divisors (401869763).

18552222037 is an equidigital number, since it uses as much as digits as its factorization.

18552222037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149175.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 18552222037 in words is "eighteen billion, five hundred fifty-two million, two hundred twenty-two thousand, thirty-seven".