19619885041 has 3 divisors (see below), whose sum is σ = 19620025113. Its totient is φ = 19619744970.

The previous prime is 19619885029. The next prime is 19619885081. The reversal of 19619885041 is 14058891691.

The square root of 19619885041 is 140071.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14058891691 = 13 ⋅1081453207.

It is not a de Polignac number, because 19619885041 - 2⁵ = 19619885009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19619885041.

It is not an unprimeable number, because it can be changed into a prime (19619885081) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 70036 + ... + 210106.

It is an arithmetic number, because the mean of its divisors is an integer number (6540008371).

Almost surely, 2^19619885041 is an apocalyptic number.

19619885041 is the 140071-st square number.

19619885041 is the 70036-th centered octagonal number.

It is an amenable number.

19619885041 is a deficient number, since it is larger than the sum of its proper divisors (140072).

19619885041 is an frugal number, since it uses more digits than its factorization.

19619885041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280142 (or 140071 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 52.

The spelling of 19619885041 in words is "nineteen billion, six hundred nineteen million, eight hundred eighty-five thousand, forty-one".