19734744285 has 16 divisors (see below), whose sum is σ = 35083990080. Its totient is φ = 10525196880.

The previous prime is 19734744283. The next prime is 19734744311. The reversal of 19734744285 is 58244743791.

19734744285 is a `hidden beast` number, since 1 + 97 + 3 + 474 + 4 + 2 + 85 = 666.

It is not a de Polignac number, because 19734744285 - 2¹ = 19734744283 is a prime.

It is a super-2 number, since 2×19734744285² (a number of 21 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 (19734744283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73091511 + ... + 73091780.

It is an arithmetic number, because the mean of its divisors is an integer number (2192749380).

Almost surely, 2^19734744285 is an apocalyptic number.

19734744285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19734744285 is a deficient number, since it is larger than the sum of its proper divisors (15349245795).

19734744285 is a wasteful number, since it uses less digits than its factorization.

19734744285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146183305 (or 146183299 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 19734744285 in words is "nineteen billion, seven hundred thirty-four million, seven hundred forty-four thousand, two hundred eighty-five".