19314471553 has 4 divisors (see below), whose sum is σ = 20800200148. Its totient is φ = 17828742960.

The previous prime is 19314471509. The next prime is 19314471557. The reversal of 19314471553 is 35517441391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35517441391 = 12157 ⋅2921563.

It can be written as a sum of positive squares in 2 ways, for example, as 7869109264 + 11445362289 = 88708^2 + 106983^2 .

It is a cyclic number.

It is not a de Polignac number, because 19314471553 - 2¹⁷ = 19314340481 is a prime.

It is a super-2 number, since 2×19314471553² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19314471557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742864278 + ... + 742864303.

It is an arithmetic number, because the mean of its divisors is an integer number (5200050037).

Almost surely, 2^19314471553 is an apocalyptic number.

19314471553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19314471553 is a deficient number, since it is larger than the sum of its proper divisors (1485728595).

19314471553 is a wasteful number, since it uses less digits than its factorization.

19314471553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485728594.

The product of its digits is 226800, while the sum is 43.

The spelling of 19314471553 in words is "nineteen billion, three hundred fourteen million, four hundred seventy-one thousand, five hundred fifty-three".