145092109 has 2 divisors, whose sum is σ = 145092110. Its totient is φ = 145092108.

The previous prime is 145092091. The next prime is 145092139. The reversal of 145092109 is 901290541.

145092109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (145092091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144072009 + 1020100 = 12003^2 + 1010^2 .

It is an emirp because it is prime and its reverse (901290541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145092109 - 2¹⁹ = 144567821 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145092139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72546054 + 72546055.

It is an arithmetic number, because the mean of its divisors is an integer number (72546055).

Almost surely, 2^145092109 is an apocalyptic number.

It is an amenable number.

145092109 is a deficient number, since it is larger than the sum of its proper divisors (1).

145092109 is an equidigital number, since it uses as much as digits as its factorization.

145092109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 145092109 is about 12045.4185896547. The cubic root of 145092109 is about 525.4700057085.

The spelling of 145092109 in words is "one hundred forty-five million, ninety-two thousand, one hundred nine".