19745914319 has 4 divisors (see below), whose sum is σ = 19949480544. Its totient is φ = 19542348096.

The previous prime is 19745914291. The next prime is 19745914361. The reversal of 19745914319 is 91341954791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91341954791 = 29 ⋅3149722579.

It is a cyclic number.

It is not a de Polignac number, because 19745914319 - 2¹⁶ = 19745848783 is a prime.

It is a super-2 number, since 2×19745914319² (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 (19745914519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101782967 + ... + 101783160.

It is an arithmetic number, because the mean of its divisors is an integer number (4987370136).

Almost surely, 2^19745914319 is an apocalyptic number.

19745914319 is a deficient number, since it is larger than the sum of its proper divisors (203566225).

19745914319 is an equidigital number, since it uses as much as digits as its factorization.

19745914319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203566224.

The product of its digits is 1224720, while the sum is 53.

The spelling of 19745914319 in words is "nineteen billion, seven hundred forty-five million, nine hundred fourteen thousand, three hundred nineteen".