201890001 has 8 divisors (see below), whose sum is σ = 269609184. Its totient is φ = 134382080.

The previous prime is 201889999. The next prime is 201890023. The reversal of 201890001 is 100098102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201890001 - 2¹ = 201889999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201890001.

It is not an unprimeable number, because it can be changed into a prime (201890071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50571 + ... + 54416.

It is an arithmetic number, because the mean of its divisors is an integer number (33701148).

Almost surely, 2^201890001 is an apocalyptic number.

It is an amenable number.

201890001 is a deficient number, since it is larger than the sum of its proper divisors (67719183).

201890001 is a wasteful number, since it uses less digits than its factorization.

201890001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105631.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 201890001 is about 14208.8001252745. The cubic root of 201890001 is about 586.6399073467.

The spelling of 201890001 in words is "two hundred one million, eight hundred ninety thousand, one".