145809135 has 24 divisors (see below), whose sum is σ = 266039280. Its totient is φ = 73671552.

The previous prime is 145809133. The next prime is 145809149. The reversal of 145809135 is 531908541.

It is not a de Polignac number, because 145809135 - 2¹ = 145809133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145809135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145809133) 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 in 23 ways as a sum of consecutive naturals, for example, 84414 + ... + 86123.

It is an arithmetic number, because the mean of its divisors is an integer number (11084970).

Almost surely, 2^145809135 is an apocalyptic number.

145809135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145809135 is a deficient number, since it is larger than the sum of its proper divisors (120230145).

145809135 is a wasteful number, since it uses less digits than its factorization.

145809135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170567 (or 170564 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 145809135 is about 12075.1453407402. The cubic root of 145809135 is about 526.3341847895.

The spelling of 145809135 in words is "one hundred forty-five million, eight hundred nine thousand, one hundred thirty-five".