30438169 has 2 divisors, whose sum is σ = 30438170. Its totient is φ = 30438168.

The previous prime is 30438137. The next prime is 30438193. The reversal of 30438169 is 96183403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26132544 + 4305625 = 5112^2 + 2075^2 .

It is a cyclic number.

It is not a de Polignac number, because 30438169 - 2⁵ = 30438137 is a prime.

It is a super-2 number, since 2×30438169² = 1852964264145122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30438119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15219084 + 15219085.

It is an arithmetic number, because the mean of its divisors is an integer number (15219085).

Almost surely, 2^30438169 is an apocalyptic number.

It is an amenable number.

30438169 is a deficient number, since it is larger than the sum of its proper divisors (1).

30438169 is an equidigital number, since it uses as much as digits as its factorization.

30438169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 30438169 is about 5517.0797529128. The cubic root of 30438169 is about 312.2287147486.

The spelling of 30438169 in words is "thirty million, four hundred thirty-eight thousand, one hundred sixty-nine".