19903284241 has 3 divisors (see below), whose sum is σ = 19903425321. Its totient is φ = 19903143162.

The previous prime is 19903284221. The next prime is 19903284257. The reversal of 19903284241 is 14248230991.

The square root of 19903284241 is 141079.

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: 14248230991 = 53 ⋅268834547.

It is not a de Polignac number, because 19903284241 - 2¹⁹ = 19902759953 is a prime.

It is a super-2 number, since 2×19903284241² (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 (19903284221) 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, 70540 + ... + 211618.

It is an arithmetic number, because the mean of its divisors is an integer number (6634475107).

Almost surely, 2^19903284241 is an apocalyptic number.

19903284241 is the 141079-th square number.

19903284241 is the 70540-th centered octagonal number.

It is an amenable number.

19903284241 is a deficient number, since it is larger than the sum of its proper divisors (141080).

19903284241 is an frugal number, since it uses more digits than its factorization.

19903284241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282158 (or 141079 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 19903284241 in words is "nineteen billion, nine hundred three million, two hundred eighty-four thousand, two hundred forty-one".