145935869 has 2 divisors, whose sum is σ = 145935870. Its totient is φ = 145935868.

The previous prime is 145935857. The next prime is 145935887. The reversal of 145935869 is 968539541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74736025 + 71199844 = 8645^2 + 8438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145935869 is a prime.

It is a super-2 number, since 2×145935869² = 42594555721570322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145935469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72967934 + 72967935.

It is an arithmetic number, because the mean of its divisors is an integer number (72967935).

Almost surely, 2^145935869 is an apocalyptic number.

It is an amenable number.

145935869 is a deficient number, since it is larger than the sum of its proper divisors (1).

145935869 is an equidigital number, since it uses as much as digits as its factorization.

145935869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 50.

The square root of 145935869 is about 12080.3919224502. The cubic root of 145935869 is about 526.4866332167.

The spelling of 145935869 in words is "one hundred forty-five million, nine hundred thirty-five thousand, eight hundred sixty-nine".