19228523011 has 4 divisors (see below), whose sum is σ = 19379928832. Its totient is φ = 19077117192.

The previous prime is 19228522991. The next prime is 19228523021. The reversal of 19228523011 is 11032582291.

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

It is a cyclic number.

It is not a de Polignac number, because 19228523011 - 2¹⁷ = 19228391939 is a prime.

It is a super-2 number, since 2×19228523011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19228523021) 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, 75702720 + ... + 75702973.

It is an arithmetic number, because the mean of its divisors is an integer number (4844982208).

Almost surely, 2^19228523011 is an apocalyptic number.

19228523011 is a deficient number, since it is larger than the sum of its proper divisors (151405821).

19228523011 is a wasteful number, since it uses less digits than its factorization.

19228523011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151405820.

The product of its (nonzero) digits is 8640, while the sum is 34.

It can be divided in two parts, 192285 and 23011, that added together give a square (215296 = 464²).

The spelling of 19228523011 in words is "nineteen billion, two hundred twenty-eight million, five hundred twenty-three thousand, eleven".