201982897 has 8 divisors (see below), whose sum is σ = 206745344. Its totient is φ = 197274528.

The previous prime is 201982877. The next prime is 201982903. The reversal of 201982897 is 798289102.

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 201982897 - 2¹⁵ = 201950129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201982817) 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, 5913 + ... + 20950.

It is an arithmetic number, because the mean of its divisors is an integer number (25843168).

Almost surely, 2^201982897 is an apocalyptic number.

It is an amenable number.

201982897 is a deficient number, since it is larger than the sum of its proper divisors (4762447).

201982897 is a wasteful number, since it uses less digits than its factorization.

201982897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27039.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 201982897 is about 14212.0687093751. The cubic root of 201982897 is about 586.7298707660.

The spelling of 201982897 in words is "two hundred one million, nine hundred eighty-two thousand, eight hundred ninety-seven".