19532019049 has 9 divisors (see below), whose sum is σ = 20751070341. Its totient is φ = 18380840640.

The previous prime is 19532019029. The next prime is 19532019053. The reversal of 19532019049 is 94091023591.

The square root of 19532019049 is 139757.

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

It can be written as a sum of positive squares in 4 ways, for example, as 10783784025 + 8748235024 = 103845^2 + 93532^2 .

It is not a de Polignac number, because 19532019049 - 2⁹ = 19532018537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19532018996 and 19532019014.

It is not an unprimeable number, because it can be changed into a prime (19532019029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2371759 + ... + 2379979.

Almost surely, 2^19532019049 is an apocalyptic number.

19532019049 is the 139757-th square number.

19532019049 is the 69879-th centered octagonal number.

It is an amenable number.

19532019049 is a deficient number, since it is larger than the sum of its proper divisors (1219051292).

19532019049 is an frugal number, since it uses more digits than its factorization.

19532019049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16476 (or 8238 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 43.

It can be divided in two parts, 195320 and 19049, that added together give a square (214369 = 463²).

The spelling of 19532019049 in words is "nineteen billion, five hundred thirty-two million, nineteen thousand, forty-nine".