30148169 has 2 divisors, whose sum is σ = 30148170. Its totient is φ = 30148168.

The previous prime is 30148141. The next prime is 30148171. The reversal of 30148169 is 96184103.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27040000 + 3108169 = 5200^2 + 1763^2 .

It is a cyclic number.

It is not a de Polignac number, because 30148169 - 2⁸ = 30147913 is a prime.

It is a super-2 number, since 2×30148169² = 1817824188105122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 30148171, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30148109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15074084 + 15074085.

It is an arithmetic number, because the mean of its divisors is an integer number (15074085).

Almost surely, 2^30148169 is an apocalyptic number.

It is an amenable number.

30148169 is a deficient number, since it is larger than the sum of its proper divisors (1).

30148169 is an equidigital number, since it uses as much as digits as its factorization.

30148169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 30148169 is about 5490.7348324245. The cubic root of 30148169 is about 311.2339613139.

The spelling of 30148169 in words is "thirty million, one hundred forty-eight thousand, one hundred sixty-nine".