30189851 has 2 divisors, whose sum is σ = 30189852. Its totient is φ = 30189850.

The previous prime is 30189847. The next prime is 30189881. The reversal of 30189851 is 15898103.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30189851 - 2² = 30189847 is a prime.

It is a super-2 number, since 2×30189851² = 1822854206804402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30189811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15094925 + 15094926.

It is an arithmetic number, because the mean of its divisors is an integer number (15094926).

Almost surely, 2^30189851 is an apocalyptic number.

30189851 is a deficient number, since it is larger than the sum of its proper divisors (1).

30189851 is an equidigital number, since it uses as much as digits as its factorization.

30189851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 30189851 is about 5494.5291882017. The cubic root of 30189851 is about 311.3773296661.

The spelling of 30189851 in words is "thirty million, one hundred eighty-nine thousand, eight hundred fifty-one".