30506887634 has 16 divisors (see below), whose sum is σ = 48589392888. Its totient is φ = 14315507712.

The previous prime is 30506887633. The next prime is 30506887661. The reversal of 30506887634 is 43678860503.

It can be written as a sum of positive squares in 4 ways, for example, as 30501574609 + 5313025 = 174647^2 + 2305^2 .

It is a super-2 number, since 2×30506887634² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30506887633) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1258907 + ... + 1282910.

Almost surely, 2^30506887634 is an apocalyptic number.

30506887634 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

30506887634 is a deficient number, since it is larger than the sum of its proper divisors (18082505254).

30506887634 is a wasteful number, since it uses less digits than its factorization.

30506887634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542189.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 30506887634 in words is "thirty billion, five hundred six million, eight hundred eighty-seven thousand, six hundred thirty-four".