192691221049 has 8 divisors (see below), whose sum is σ = 193890977280. Its totient is φ = 191492011776.

The previous prime is 192691221017. The next prime is 192691221059. The reversal of 192691221049 is 940122196291.

It is a happy number.

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 192691221049 - 2⁵ = 192691221017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (192691221059) 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, 581752 + ... + 850774.

It is an arithmetic number, because the mean of its divisors is an integer number (24236372160).

Almost surely, 2^192691221049 is an apocalyptic number.

It is an amenable number.

192691221049 is a deficient number, since it is larger than the sum of its proper divisors (1199756231).

192691221049 is a wasteful number, since it uses less digits than its factorization.

192691221049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273479.

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 192691221049 in words is "one hundred ninety-two billion, six hundred ninety-one million, two hundred twenty-one thousand, forty-nine".