201979583 has 16 divisors (see below), whose sum is σ = 227619840. Its totient is φ = 177829344.

The previous prime is 201979553. The next prime is 201979621. The reversal of 201979583 is 385979102.

It is a cyclic number.

It is not a de Polignac number, because 201979583 - 2¹⁰ = 201978559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201979523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137708 + ... + 139166.

It is an arithmetic number, because the mean of its divisors is an integer number (14226240).

Almost surely, 2^201979583 is an apocalyptic number.

201979583 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

201979583 is a deficient number, since it is larger than the sum of its proper divisors (25640257).

201979583 is a wasteful number, since it uses less digits than its factorization.

201979583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1958.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 201979583 is about 14211.9521178479. The cubic root of 201979583 is about 586.7266618583.

The spelling of 201979583 in words is "two hundred one million, nine hundred seventy-nine thousand, five hundred eighty-three".