19634255045 has 8 divisors (see below), whose sum is σ = 23663994360. Its totient is φ = 15638811840.

The previous prime is 19634255041. The next prime is 19634255099. The reversal of 19634255045 is 54055243691.

It can be written as a sum of positive squares in 4 ways, for example, as 9666429124 + 9967825921 = 98318^2 + 99839^2 .

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

It is not a de Polignac number, because 19634255045 - 2² = 19634255041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19634254987 and 19634255005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19634255041) 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, 8572766 + ... + 8575055.

It is an arithmetic number, because the mean of its divisors is an integer number (2957999295).

Almost surely, 2^19634255045 is an apocalyptic number.

It is an amenable number.

19634255045 is a deficient number, since it is larger than the sum of its proper divisors (4029739315).

19634255045 is a wasteful number, since it uses less digits than its factorization.

19634255045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17148055.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 19634255045 in words is "nineteen billion, six hundred thirty-four million, two hundred fifty-five thousand, forty-five".