19870049023 has 8 divisors (see below), whose sum is σ = 21937579776. Its totient is φ = 17846045400.

The previous prime is 19870048999. The next prime is 19870049029. The reversal of 19870049023 is 32094007891.

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 19870049023 - 2²¹ = 19867951871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19870049029) 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, 10880823 + ... + 10882648.

It is an arithmetic number, because the mean of its divisors is an integer number (2742197472).

Almost surely, 2^19870049023 is an apocalyptic number.

19870049023 is a deficient number, since it is larger than the sum of its proper divisors (2067530753).

19870049023 is a wasteful number, since it uses less digits than its factorization.

19870049023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21763565.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 19870049023 in words is "nineteen billion, eight hundred seventy million, forty-nine thousand, twenty-three".