18202044307 has 4 divisors (see below), whose sum is σ = 18239420656. Its totient is φ = 18164667960.

The previous prime is 18202044299. The next prime is 18202044319. The reversal of 18202044307 is 70344020281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70344020281 = 1459 ⋅48213859.

It is a cyclic number.

It is not a de Polignac number, because 18202044307 - 2³ = 18202044299 is a prime.

It is a super-2 number, since 2×18202044307² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18202044907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18687444 + ... + 18688417.

It is an arithmetic number, because the mean of its divisors is an integer number (4559855164).

Almost surely, 2^18202044307 is an apocalyptic number.

18202044307 is a deficient number, since it is larger than the sum of its proper divisors (37376349).

18202044307 is an equidigital number, since it uses as much as digits as its factorization.

18202044307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37376348.

The product of its (nonzero) digits is 10752, while the sum is 31.

Adding to 18202044307 its reverse (70344020281), we get a palindrome (88546064588).

The spelling of 18202044307 in words is "eighteen billion, two hundred two million, forty-four thousand, three hundred seven".