19572333449 has 2 divisors, whose sum is σ = 19572333450. Its totient is φ = 19572333448.

The previous prime is 19572333413. The next prime is 19572333511. The reversal of 19572333449 is 94433327591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17336462224 + 2235871225 = 131668^2 + 47285^2 .

It is a cyclic number.

It is not a de Polignac number, because 19572333449 - 2²⁴ = 19555556233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19572333397 and 19572333406.

It is not a weakly prime, because it can be changed into another prime (19572338449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9786166724 + 9786166725.

It is an arithmetic number, because the mean of its divisors is an integer number (9786166725).

Almost surely, 2^19572333449 is an apocalyptic number.

It is an amenable number.

19572333449 is a deficient number, since it is larger than the sum of its proper divisors (1).

19572333449 is an equidigital number, since it uses as much as digits as its factorization.

19572333449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 50.

The spelling of 19572333449 in words is "nineteen billion, five hundred seventy-two million, three hundred thirty-three thousand, four hundred forty-nine".