20013301749 has 48 divisors (see below), whose sum is σ = 33224663040. Its totient is φ = 10484652960.

The previous prime is 20013301747. The next prime is 20013301769. The reversal of 20013301749 is 94710331002.

It is not a de Polignac number, because 20013301749 - 2¹ = 20013301747 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013301741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 192432 + ... + 277590.

It is an arithmetic number, because the mean of its divisors is an integer number (692180480).

Almost surely, 2^20013301749 is an apocalyptic number.

It is an amenable number.

20013301749 is a deficient number, since it is larger than the sum of its proper divisors (13211361291).

20013301749 is a wasteful number, since it uses less digits than its factorization.

20013301749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85238 (or 85219 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The spelling of 20013301749 in words is "twenty billion, thirteen million, three hundred one thousand, seven hundred forty-nine".