19734078069 has 6 divisors (see below), whose sum is σ = 28504779446. Its totient is φ = 13156052040.

The previous prime is 19734078029. The next prime is 19734078071. The reversal of 19734078069 is 96087043791.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16043515569 + 3690562500 = 126663^2 + 60750^2 .

It is not a de Polignac number, because 19734078069 - 2⁷ = 19734077941 is a prime.

It is a super-2 number, since 2×19734078069² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19734078019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1096337662 + ... + 1096337679.

Almost surely, 2^19734078069 is an apocalyptic number.

It is an amenable number.

19734078069 is a deficient number, since it is larger than the sum of its proper divisors (8770701377).

19734078069 is a wasteful number, since it uses less digits than its factorization.

19734078069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192675347 (or 2192675344 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 19734078069 in words is "nineteen billion, seven hundred thirty-four million, seventy-eight thousand, sixty-nine".