19894099267 has 16 divisors (see below), whose sum is σ = 23555021760. Its totient is φ = 16439649408.

The previous prime is 19894099249. The next prime is 19894099273. The reversal of 19894099267 is 76299049891.

It is a de Polignac number, because none of the positive numbers 2^k-19894099267 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19894099199 and 19894099208.

It is not an unprimeable number, because it can be changed into a prime (19894099367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65053 + ... + 209809.

It is an arithmetic number, because the mean of its divisors is an integer number (1472188860).

Almost surely, 2^19894099267 is an apocalyptic number.

19894099267 is a deficient number, since it is larger than the sum of its proper divisors (3660922493).

19894099267 is a wasteful number, since it uses less digits than its factorization.

19894099267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145470.

The product of its (nonzero) digits is 17635968, while the sum is 64.

The spelling of 19894099267 in words is "nineteen billion, eight hundred ninety-four million, ninety-nine thousand, two hundred sixty-seven".