30157189 has 4 divisors (see below), whose sum is σ = 30194656. Its totient is φ = 30119724.

The previous prime is 30157157. The next prime is 30157207. The reversal of 30157189 is 98175103.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30157189 - 2⁵ = 30157157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30157289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17499 + ... + 19144.

It is an arithmetic number, because the mean of its divisors is an integer number (7548664).

Almost surely, 2^30157189 is an apocalyptic number.

It is an amenable number.

30157189 is a deficient number, since it is larger than the sum of its proper divisors (37467).

30157189 is an equidigital number, since it uses as much as digits as its factorization.

30157189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37466.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 30157189 is about 5491.5561546797. The cubic root of 30157189 is about 311.2649974763.

The spelling of 30157189 in words is "thirty million, one hundred fifty-seven thousand, one hundred eighty-nine".