145829197 has 4 divisors (see below), whose sum is σ = 150857820. Its totient is φ = 140800576.

The previous prime is 145829191. The next prime is 145829207. The reversal of 145829197 is 791928541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100280196 + 45549001 = 10014^2 + 6749^2 .

It is a cyclic number.

It is not a de Polignac number, because 145829197 - 2¹⁹ = 145304909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145829191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2514268 + ... + 2514325.

It is an arithmetic number, because the mean of its divisors is an integer number (37714455).

Almost surely, 2^145829197 is an apocalyptic number.

It is an amenable number.

145829197 is a deficient number, since it is larger than the sum of its proper divisors (5028623).

145829197 is an equidigital number, since it uses as much as digits as its factorization.

145829197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028622.

The product of its digits is 181440, while the sum is 46.

The square root of 145829197 is about 12075.9760268063. The cubic root of 145829197 is about 526.3583232684.

The spelling of 145829197 in words is "one hundred forty-five million, eight hundred twenty-nine thousand, one hundred ninety-seven".