19034900869 has 4 divisors (see below), whose sum is σ = 19394049996. Its totient is φ = 18675751744.

The previous prime is 19034900851. The next prime is 19034900873. The reversal of 19034900869 is 96800943091.

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 6661008225 + 12373892644 = 81615^2 + 111238^2 .

It is a cyclic number.

It is not a de Polignac number, because 19034900869 - 2¹³ = 19034892677 is a prime.

It is a super-2 number, since 2×19034900869² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19034900849) 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, 179574484 + ... + 179574589.

It is an arithmetic number, because the mean of its divisors is an integer number (4848512499).

Almost surely, 2^19034900869 is an apocalyptic number.

It is an amenable number.

19034900869 is a deficient number, since it is larger than the sum of its proper divisors (359149127).

19034900869 is an equidigital number, since it uses as much as digits as its factorization.

19034900869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359149126.

The product of its (nonzero) digits is 419904, while the sum is 49.

It can be divided in two parts, 19034900 and 869, that added together give a square (19035769 = 4363²).

The spelling of 19034900869 in words is "nineteen billion, thirty-four million, nine hundred thousand, eight hundred sixty-nine".