201868913 has 16 divisors (see below), whose sum is σ = 214272000. Its totient is φ = 189891072.

The previous prime is 201868883. The next prime is 201868949. The reversal of 201868913 is 319868102.

It is not a de Polignac number, because 201868913 - 2⁸ = 201868657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201868973) 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, 216833 + ... + 217761.

It is an arithmetic number, because the mean of its divisors is an integer number (13392000).

Almost surely, 2^201868913 is an apocalyptic number.

It is an amenable number.

201868913 is a deficient number, since it is larger than the sum of its proper divisors (12403087).

201868913 is a wasteful number, since it uses less digits than its factorization.

201868913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 201868913 is about 14208.0580305684. The cubic root of 201868913 is about 586.6194812185.

The spelling of 201868913 in words is "two hundred one million, eight hundred sixty-eight thousand, nine hundred thirteen".