19274055853 has 4 divisors (see below), whose sum is σ = 20756675548. Its totient is φ = 17791436160.

The previous prime is 19274055811. The next prime is 19274055877. The reversal of 19274055853 is 35855047291.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3239658724 + 16034397129 = 56918^2 + 126627^2 .

It is a cyclic number.

It is not a de Polignac number, because 19274055853 - 2⁹ = 19274055341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19274055797 and 19274055806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19274055803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 741309828 + ... + 741309853.

It is an arithmetic number, because the mean of its divisors is an integer number (5189168887).

Almost surely, 2^19274055853 is an apocalyptic number.

19274055853 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19274055853 is a deficient number, since it is larger than the sum of its proper divisors (1482619695).

19274055853 is a wasteful number, since it uses less digits than its factorization.

19274055853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482619694.

The product of its (nonzero) digits is 1512000, while the sum is 49.

The spelling of 19274055853 in words is "nineteen billion, two hundred seventy-four million, fifty-five thousand, eight hundred fifty-three".