30390037898 has 24 divisors (see below), whose sum is σ = 50254705956. Its totient is φ = 13772626560.

The previous prime is 30390037877. The next prime is 30390037903. The reversal of 30390037898 is 89873009303.

It can be written as a sum of positive squares in 2 ways, for example, as 30386416489 + 3621409 = 174317^2 + 1903^2 .

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 11 ways as a sum of consecutive naturals, for example, 104765 + ... + 267872.

Almost surely, 2^30390037898 is an apocalyptic number.

30390037898 is a deficient number, since it is larger than the sum of its proper divisors (19864668058).

30390037898 is a wasteful number, since it uses less digits than its factorization.

30390037898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372998 (or 372987 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 30390037898 in words is "thirty billion, three hundred ninety million, thirty-seven thousand, eight hundred ninety-eight".