19452159841 has 9 divisors (see below), whose sum is σ = 19574400339. Its totient is φ = 19330680600.

The previous prime is 19452159829. The next prime is 19452159847. The reversal of 19452159841 is 14895125491.

The square root of 19452159841 is 139471.

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

It can be written as a sum of positive squares in only one way, i.e., 15445269841 + 4006890000 = 124279^2 + 63300^2 .

It is not a de Polignac number, because 19452159841 - 2²¹ = 19450062689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19452159847) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 29428051 + ... + 29428711.

It is an arithmetic number, because the mean of its divisors is an integer number (2174933371).

Almost surely, 2^19452159841 is an apocalyptic number.

19452159841 is the 139471-st square number.

19452159841 is the 69736-th centered octagonal number.

It is an amenable number.

19452159841 is a deficient number, since it is larger than the sum of its proper divisors (122240498).

19452159841 is an frugal number, since it uses more digits than its factorization.

19452159841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744 (or 872 counting only the distinct ones).

The product of its digits is 518400, while the sum is 49.

Multiplying 19452159841 by its sum of digits (49), we get a square (953155832209 = 976297²).

The spelling of 19452159841 in words is "nineteen billion, four hundred fifty-two million, one hundred fifty-nine thousand, eight hundred forty-one".