19945852529 has 8 divisors (see below), whose sum is σ = 20285868288. Its totient is φ = 19606257360.

The previous prime is 19945852519. The next prime is 19945852543. The reversal of 19945852529 is 92525854991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19945852529 - 2⁸ = 19945852273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19945852519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8747 + ... + 199920.

It is an arithmetic number, because the mean of its divisors is an integer number (2535733536).

Almost surely, 2^19945852529 is an apocalyptic number.

It is an amenable number.

19945852529 is a deficient number, since it is larger than the sum of its proper divisors (340015759).

19945852529 is a wasteful number, since it uses less digits than its factorization.

19945852529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210295.

The product of its digits is 11664000, while the sum is 59.

The spelling of 19945852529 in words is "nineteen billion, nine hundred forty-five million, eight hundred fifty-two thousand, five hundred twenty-nine".