201973913 has 8 divisors (see below), whose sum is σ = 209817216. Its totient is φ = 194269600.

The previous prime is 201973909. The next prime is 201973939. The reversal of 201973913 is 319379102.

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 201973913 - 2² = 201973909 is a prime.

It is a super-3 number, since 3×201973913³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201973903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31781 + ... + 37602.

It is an arithmetic number, because the mean of its divisors is an integer number (26227152).

Almost surely, 2^201973913 is an apocalyptic number.

It is an amenable number.

201973913 is a deficient number, since it is larger than the sum of its proper divisors (7843303).

201973913 is an equidigital number, since it uses as much as digits as its factorization.

201973913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69495.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 201973913 is about 14211.7526364625. The cubic root of 201973913 is about 586.7211715817.

The spelling of 201973913 in words is "two hundred one million, nine hundred seventy-three thousand, nine hundred thirteen".