19135146545 has 4 divisors (see below), whose sum is σ = 22962175860. Its totient is φ = 15308117232.

The previous prime is 19135146529. The next prime is 19135146557. The reversal of 19135146545 is 54564153191.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54564153191 = 37 ⋅1474706843.

It can be written as a sum of positive squares in 2 ways, for example, as 13288556176 + 5846590369 = 115276^2 + 76463^2 .

It is a cyclic number.

It is not a de Polignac number, because 19135146545 - 2⁴ = 19135146529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19135146496 and 19135146505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1913514650 + ... + 1913514659.

It is an arithmetic number, because the mean of its divisors is an integer number (5740543965).

Almost surely, 2^19135146545 is an apocalyptic number.

It is an amenable number.

19135146545 is a deficient number, since it is larger than the sum of its proper divisors (3827029315).

19135146545 is an equidigital number, since it uses as much as digits as its factorization.

19135146545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3827029314.

The product of its digits is 324000, while the sum is 44.

The spelling of 19135146545 in words is "nineteen billion, one hundred thirty-five million, one hundred forty-six thousand, five hundred forty-five".