146643109 has 2 divisors, whose sum is σ = 146643110. Its totient is φ = 146643108.

The previous prime is 146643097. The next prime is 146643157. The reversal of 146643109 is 901346641.

146643109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145130209 + 1512900 = 12047^2 + 1230^2 .

It is a cyclic number.

It is not a de Polignac number, because 146643109 - 2⁷ = 146642981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146643199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73321554 + 73321555.

It is an arithmetic number, because the mean of its divisors is an integer number (73321555).

Almost surely, 2^146643109 is an apocalyptic number.

It is an amenable number.

146643109 is a deficient number, since it is larger than the sum of its proper divisors (1).

146643109 is an equidigital number, since it uses as much as digits as its factorization.

146643109 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 146643109 is about 12109.6287721796. The cubic root of 146643109 is about 527.3357562377.

The spelling of 146643109 in words is "one hundred forty-six million, six hundred forty-three thousand, one hundred nine".