201851019293 has 48 divisors (see below), whose sum is σ = 270565447680. Its totient is φ = 148672389600.

The previous prime is 201851019281. The next prime is 201851019301. The reversal of 201851019293 is 392910158102.

201851019293 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201851019293 - 2¹⁴ = 201851002909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201851019293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201851019263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 578018 + ... + 858956.

It is an arithmetic number, because the mean of its divisors is an integer number (5636780160).

Almost surely, 2^201851019293 is an apocalyptic number.

It is an amenable number.

201851019293 is a deficient number, since it is larger than the sum of its proper divisors (68714428387).

201851019293 is a wasteful number, since it uses less digits than its factorization.

201851019293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281038 (or 281031 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 201851019293 in words is "two hundred one billion, eight hundred fifty-one million, nineteen thousand, two hundred ninety-three".