201980911 has 16 divisors (see below), whose sum is σ = 230234400. Its totient is φ = 175504000.

The previous prime is 201980899. The next prime is 201980923. The reversal of 201980911 is 119089102.

It is an interprime number because it is at equal distance from previous prime (201980899) and next prime (201980923).

It is a cyclic number.

It is not a de Polignac number, because 201980911 - 2⁵ = 201980879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201980941) 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, 29085 + ... + 35353.

It is an arithmetic number, because the mean of its divisors is an integer number (14389650).

Almost surely, 2^201980911 is an apocalyptic number.

201980911 is a deficient number, since it is larger than the sum of its proper divisors (28253489).

201980911 is a wasteful number, since it uses less digits than its factorization.

201980911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6410.

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 201980911 is about 14211.9988390092. The cubic root of 201980911 is about 586.7279477495.

The spelling of 201980911 in words is "two hundred one million, nine hundred eighty thousand, nine hundred eleven".