30918828445 has 4 divisors (see below), whose sum is σ = 37102594140. Its totient is φ = 24735062752.

The previous prime is 30918828433. The next prime is 30918828467. The reversal of 30918828445 is 54482881903.

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 15313072516 + 15605755929 = 123746^2 + 124923^2 .

It is a cyclic number.

It is not a de Polignac number, because 30918828445 - 2¹³ = 30918820253 is a prime.

It is a super-2 number, since 2×30918828445² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30918828392 and 30918828401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3091882840 + ... + 3091882849.

It is an arithmetic number, because the mean of its divisors is an integer number (9275648535).

Almost surely, 2^30918828445 is an apocalyptic number.

It is an amenable number.

30918828445 is a deficient number, since it is larger than the sum of its proper divisors (6183765695).

30918828445 is an equidigital number, since it uses as much as digits as its factorization.

30918828445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6183765694.

The product of its (nonzero) digits is 2211840, while the sum is 52.

The spelling of 30918828445 in words is "thirty billion, nine hundred eighteen million, eight hundred twenty-eight thousand, four hundred forty-five".