30180989 has 4 divisors (see below), whose sum is σ = 30253440. Its totient is φ = 30108540.

The previous prime is 30180977. The next prime is 30181027. The reversal of 30180989 is 98908103.

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 30180989 - 2⁴ = 30180973 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 (30180929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35597 + ... + 36434.

It is an arithmetic number, because the mean of its divisors is an integer number (7563360).

Almost surely, 2^30180989 is an apocalyptic number.

It is an amenable number.

30180989 is a deficient number, since it is larger than the sum of its proper divisors (72451).

30180989 is an equidigital number, since it uses as much as digits as its factorization.

30180989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72450.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 30180989 is about 5493.7226904896. The cubic root of 30180989 is about 311.3468592061.

The spelling of 30180989 in words is "thirty million, one hundred eighty thousand, nine hundred eighty-nine".