30578285149 has 4 divisors (see below), whose sum is σ = 30578768764. Its totient is φ = 30577801536.

The previous prime is 30578285137. The next prime is 30578285159. The reversal of 30578285149 is 94158287503.

It is a happy number.

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 6764240025 + 23814045124 = 82245^2 + 154318^2 .

It is a cyclic number.

It is not a de Polignac number, because 30578285149 - 2⁹ = 30578284637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30578285096 and 30578285105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30578285119) 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, 129612 + ... + 279205.

It is an arithmetic number, because the mean of its divisors is an integer number (7644692191).

Almost surely, 2^30578285149 is an apocalyptic number.

It is an amenable number.

30578285149 is a deficient number, since it is larger than the sum of its proper divisors (483615).

30578285149 is an equidigital number, since it uses as much as digits as its factorization.

30578285149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483614.

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 30578285149 in words is "thirty billion, five hundred seventy-eight million, two hundred eighty-five thousand, one hundred forty-nine".