18969000191 has 8 divisors (see below), whose sum is σ = 19260880800. Its totient is φ = 18679085568.

The previous prime is 18969000179. The next prime is 18969000199. The reversal of 18969000191 is 19100096981.

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 18969000191 - 2¹⁴ = 18968983807 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 (18969000199) 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, 472046 + ... + 510651.

It is an arithmetic number, because the mean of its divisors is an integer number (2407610100).

Almost surely, 2^18969000191 is an apocalyptic number.

18969000191 is a deficient number, since it is larger than the sum of its proper divisors (291880609).

18969000191 is an equidigital number, since it uses as much as digits as its factorization.

18969000191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982993.

The product of its (nonzero) digits is 34992, while the sum is 44.

The spelling of 18969000191 in words is "eighteen billion, nine hundred sixty-nine million, one hundred ninety-one", and thus it is an aban number.