19291434369 has 16 divisors (see below), whose sum is σ = 28668386880. Its totient is φ = 11467353600.

The previous prime is 19291434361. The next prime is 19291434377. The reversal of 19291434369 is 96343419291.

It is an interprime number because it is at equal distance from previous prime (19291434361) and next prime (19291434377).

It is not a de Polignac number, because 19291434369 - 2³ = 19291434361 is a prime.

It is a super-2 number, since 2×19291434369² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (19291434361) 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, 9953332 + ... + 9955269.

It is an arithmetic number, because the mean of its divisors is an integer number (1791774180).

Almost surely, 2^19291434369 is an apocalyptic number.

19291434369 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

19291434369 is a deficient number, since it is larger than the sum of its proper divisors (9376952511).

19291434369 is a wasteful number, since it uses less digits than its factorization.

19291434369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19908640.

The product of its digits is 1259712, while the sum is 51.

The spelling of 19291434369 in words is "nineteen billion, two hundred ninety-one million, four hundred thirty-four thousand, three hundred sixty-nine".