145838117 has 2 divisors, whose sum is σ = 145838118. Its totient is φ = 145838116.

The previous prime is 145838083. The next prime is 145838137. The reversal of 145838117 is 711838541.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113188321 + 32649796 = 10639^2 + 5714^2 .

It is a cyclic number.

It is not a de Polignac number, because 145838117 - 2¹⁶ = 145772581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145838137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72919058 + 72919059.

It is an arithmetic number, because the mean of its divisors is an integer number (72919059).

Almost surely, 2^145838117 is an apocalyptic number.

It is an amenable number.

145838117 is a deficient number, since it is larger than the sum of its proper divisors (1).

145838117 is an equidigital number, since it uses as much as digits as its factorization.

145838117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 38.

The square root of 145838117 is about 12076.3453494838. The cubic root of 145838117 is about 526.3690550482.

The spelling of 145838117 in words is "one hundred forty-five million, eight hundred thirty-eight thousand, one hundred seventeen".