30361189 has 2 divisors, whose sum is σ = 30361190. Its totient is φ = 30361188.

The previous prime is 30361181. The next prime is 30361217. The reversal of 30361189 is 98116303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30360100 + 1089 = 5510^2 + 33^2 .

It is a cyclic number.

It is not a de Polignac number, because 30361189 - 2³ = 30361181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30361189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30361181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15180594 + 15180595.

It is an arithmetic number, because the mean of its divisors is an integer number (15180595).

Almost surely, 2^30361189 is an apocalyptic number.

It is an amenable number.

30361189 is a deficient number, since it is larger than the sum of its proper divisors (1).

30361189 is an equidigital number, since it uses as much as digits as its factorization.

30361189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 30361189 is about 5510.0988194405. The cubic root of 30361189 is about 311.9652773379.

It can be divided in two parts, 3036 and 1189, that added together give a square (4225 = 65²).

The spelling of 30361189 in words is "thirty million, three hundred sixty-one thousand, one hundred eighty-nine".