201538983 has 8 divisors (see below), whose sum is σ = 268791408. Its totient is φ = 134322944.

The previous prime is 201538973. The next prime is 201539021. The reversal of 201538983 is 389835102.

201538983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 201538983 - 2²¹ = 199441831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201538943) 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, 8941 + ... + 21977.

It is an arithmetic number, because the mean of its divisors is an integer number (33598926).

Almost surely, 2^201538983 is an apocalyptic number.

201538983 is a deficient number, since it is larger than the sum of its proper divisors (67252425).

201538983 is a wasteful number, since it uses less digits than its factorization.

201538983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18193.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 201538983 is about 14196.4426177828. The cubic root of 201538983 is about 586.2997210676.

The spelling of 201538983 in words is "two hundred one million, five hundred thirty-eight thousand, nine hundred eighty-three".