18830736445 has 4 divisors (see below), whose sum is σ = 22596883740. Its totient is φ = 15064589152.

The previous prime is 18830736427. The next prime is 18830736461. The reversal of 18830736445 is 54463703881.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3191233081 + 15639503364 = 56491^2 + 125058^2 .

It is a cyclic number.

It is not a de Polignac number, because 18830736445 - 2¹⁵ = 18830703677 is a prime.

It is a super-2 number, since 2×18830736445² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1883073640 + ... + 1883073649.

It is an arithmetic number, because the mean of its divisors is an integer number (5649220935).

Almost surely, 2^18830736445 is an apocalyptic number.

It is an amenable number.

18830736445 is a deficient number, since it is larger than the sum of its proper divisors (3766147295).

18830736445 is an equidigital number, since it uses as much as digits as its factorization.

18830736445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3766147294.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 18830736445 in words is "eighteen billion, eight hundred thirty million, seven hundred thirty-six thousand, four hundred forty-five".