145990205 has 24 divisors (see below), whose sum is σ = 191338200. Its totient is φ = 106791552.

The previous prime is 145990193. The next prime is 145990213. The reversal of 145990205 is 502099541.

145990205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 22024249 + 123965956 = 4693^2 + 11134^2 .

It is not a de Polignac number, because 145990205 - 2¹² = 145986109 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50951 + ... + 53739.

It is an arithmetic number, because the mean of its divisors is an integer number (7972425).

Almost surely, 2^145990205 is an apocalyptic number.

It is an amenable number.

145990205 is a deficient number, since it is larger than the sum of its proper divisors (45347995).

145990205 is a wasteful number, since it uses less digits than its factorization.

145990205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861 (or 2842 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 145990205 is about 12082.6406468123. The cubic root of 145990205 is about 526.5519670016.

The spelling of 145990205 in words is "one hundred forty-five million, nine hundred ninety thousand, two hundred five".