201388023789 has 32 divisors (see below), whose sum is σ = 273130598400. Its totient is φ = 131968699200.

The previous prime is 201388023773. The next prime is 201388023827. The reversal of 201388023789 is 987320883102.

It is not a de Polignac number, because 201388023789 - 2⁴ = 201388023773 is a prime.

It is a super-2 number, since 2×201388023789² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201388025789) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54412639 + ... + 54416339.

It is an arithmetic number, because the mean of its divisors is an integer number (8535331200).

Almost surely, 2^201388023789 is an apocalyptic number.

It is an amenable number.

201388023789 is a deficient number, since it is larger than the sum of its proper divisors (71742574611).

201388023789 is a wasteful number, since it uses less digits than its factorization.

201388023789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4745.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 201388023789 in words is "two hundred one billion, three hundred eighty-eight million, twenty-three thousand, seven hundred eighty-nine".