201864345 has 16 divisors (see below), whose sum is σ = 327409152. Its totient is φ = 106185600.

The previous prime is 201864337. The next prime is 201864349. The reversal of 201864345 is 543468102.

It is not a de Polignac number, because 201864345 - 2³ = 201864337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201864349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91081 + ... + 93270.

It is an arithmetic number, because the mean of its divisors is an integer number (20463072).

Almost surely, 2^201864345 is an apocalyptic number.

It is an amenable number.

201864345 is a deficient number, since it is larger than the sum of its proper divisors (125544807).

201864345 is a wasteful number, since it uses less digits than its factorization.

201864345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184432.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 201864345 is about 14207.8972758111. The cubic root of 201864345 is about 586.6150564031.

It can be divided in two parts, 20186 and 4345, that added together give a triangular number (24531 = T₂₂₁).

The spelling of 201864345 in words is "two hundred one million, eight hundred sixty-four thousand, three hundred forty-five".