145633109 has 2 divisors, whose sum is σ = 145633110. Its totient is φ = 145633108.

The previous prime is 145633057. The next prime is 145633121. The reversal of 145633109 is 901336541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130462084 + 15171025 = 11422^2 + 3895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145633109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145633139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72816554 + 72816555.

It is an arithmetic number, because the mean of its divisors is an integer number (72816555).

Almost surely, 2^145633109 is an apocalyptic number.

It is an amenable number.

145633109 is a deficient number, since it is larger than the sum of its proper divisors (1).

145633109 is an equidigital number, since it uses as much as digits as its factorization.

145633109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 145633109 is about 12067.8543660420. The cubic root of 145633109 is about 526.1222963526.

The spelling of 145633109 in words is "one hundred forty-five million, six hundred thirty-three thousand, one hundred nine".