190769423821 has 8 divisors (see below), whose sum is σ = 202002004224. Its totient is φ = 179538048960.

The previous prime is 190769423813. The next prime is 190769423839. The reversal of 190769423821 is 128324967091.

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 190769423821 - 2³ = 190769423813 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 (190769423861) 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, 35166 + ... + 618688.

It is an arithmetic number, because the mean of its divisors is an integer number (25250250528).

Almost surely, 2^190769423821 is an apocalyptic number.

It is an amenable number.

190769423821 is a deficient number, since it is larger than the sum of its proper divisors (11232580403).

190769423821 is a wasteful number, since it uses less digits than its factorization.

190769423821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602771.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 190769423821 in words is "one hundred ninety billion, seven hundred sixty-nine million, four hundred twenty-three thousand, eight hundred twenty-one".