30145669 has 2 divisors, whose sum is σ = 30145670. Its totient is φ = 30145668.

The previous prime is 30145657. The next prime is 30145673. The reversal of 30145669 is 96654103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16728100 + 13417569 = 4090^2 + 3663^2 .

It is a cyclic number.

It is not a de Polignac number, because 30145669 - 2¹¹ = 30143621 is a prime.

It is a super-2 number, since 2×30145669² = 1817522718915122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30145649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15072834 + 15072835.

It is an arithmetic number, because the mean of its divisors is an integer number (15072835).

Almost surely, 2^30145669 is an apocalyptic number.

It is an amenable number.

30145669 is a deficient number, since it is larger than the sum of its proper divisors (1).

30145669 is an equidigital number, since it uses as much as digits as its factorization.

30145669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 30145669 is about 5490.5071714733. The cubic root of 30145669 is about 311.2253581777.

The spelling of 30145669 in words is "thirty million, one hundred forty-five thousand, six hundred sixty-nine".