30007990187 has 6 divisors (see below), whose sum is σ = 34907253948. Its totient is φ = 25721134404.

The previous prime is 30007990139. The next prime is 30007990189. The reversal of 30007990187 is 78109970003.

It is not a de Polignac number, because 30007990187 - 2⁶ = 30007990123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30007990189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 306203933 + ... + 306204030.

It is an arithmetic number, because the mean of its divisors is an integer number (5817875658).

Almost surely, 2^30007990187 is an apocalyptic number.

30007990187 is a deficient number, since it is larger than the sum of its proper divisors (4899263761).

30007990187 is an equidigital number, since it uses as much as digits as its factorization.

30007990187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612407977 (or 612407970 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 44.

The spelling of 30007990187 in words is "thirty billion, seven million, nine hundred ninety thousand, one hundred eighty-seven".