145186117 has 2 divisors, whose sum is σ = 145186118. Its totient is φ = 145186116.

The previous prime is 145186109. The next prime is 145186127. The reversal of 145186117 is 711681541.

145186117 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., 87030241 + 58155876 = 9329^2 + 7626^2 .

It is a cyclic number.

It is not a de Polignac number, because 145186117 - 2³ = 145186109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145186127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72593058 + 72593059.

It is an arithmetic number, because the mean of its divisors is an integer number (72593059).

Almost surely, 2^145186117 is an apocalyptic number.

It is an amenable number.

145186117 is a deficient number, since it is larger than the sum of its proper divisors (1).

145186117 is an equidigital number, since it uses as much as digits as its factorization.

145186117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 34.

The square root of 145186117 is about 12049.3201882928. The cubic root of 145186117 is about 525.5834686201.

The spelling of 145186117 in words is "one hundred forty-five million, one hundred eighty-six thousand, one hundred seventeen".