19874764801 has 8 divisors (see below), whose sum is σ = 20369349000. Its totient is φ = 19380648960.

The previous prime is 19874764799. The next prime is 19874764817. The reversal of 19874764801 is 10846747891.

It can be written as a sum of positive squares in 4 ways, for example, as 3285582400 + 16589182401 = 57320^2 + 128799^2 .

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 19874764801 - 2¹ = 19874764799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19874764831) 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, 30376 + ... + 201673.

It is an arithmetic number, because the mean of its divisors is an integer number (2546168625).

Almost surely, 2^19874764801 is an apocalyptic number.

It is an amenable number.

19874764801 is a deficient number, since it is larger than the sum of its proper divisors (494584199).

19874764801 is a wasteful number, since it uses less digits than its factorization.

19874764801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234179.

The product of its (nonzero) digits is 2709504, while the sum is 55.

The spelling of 19874764801 in words is "nineteen billion, eight hundred seventy-four million, seven hundred sixty-four thousand, eight hundred one".