201932145 has 12 divisors (see below), whose sum is σ = 350015796. Its totient is φ = 107697120.

The previous prime is 201932141. The next prime is 201932147. The reversal of 201932145 is 541239102.

It can be written as a sum of positive squares in 2 ways, for example, as 91240704 + 110691441 = 9552^2 + 10521^2 .

It is not a de Polignac number, because 201932145 - 2² = 201932141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201932141) 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 11 ways as a sum of consecutive naturals, for example, 2243646 + ... + 2243735.

It is an arithmetic number, because the mean of its divisors is an integer number (29167983).

Almost surely, 2^201932145 is an apocalyptic number.

It is an amenable number.

201932145 is a deficient number, since it is larger than the sum of its proper divisors (148083651).

201932145 is a wasteful number, since it uses less digits than its factorization.

201932145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4487392 (or 4487389 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 201932145 is about 14210.2830724796. The cubic root of 201932145 is about 586.6807243461.

The spelling of 201932145 in words is "two hundred one million, nine hundred thirty-two thousand, one hundred forty-five".