921442495385 has 8 divisors (see below), whose sum is σ = 1118154938760. Its totient is φ = 728871366784.

The previous prime is 921442495361. The next prime is 921442495397. The reversal of 921442495385 is 583594244129.

It can be written as a sum of positive squares in 4 ways, for example, as 27772889104 + 893669606281 = 166652^2 + 945341^2 .

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 921442495385 - 2²² = 921438301081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 921442495385.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1035328202 + ... + 1035329091.

It is an arithmetic number, because the mean of its divisors is an integer number (139769367345).

Almost surely, 2^921442495385 is an apocalyptic number.

It is an amenable number.

921442495385 is a deficient number, since it is larger than the sum of its proper divisors (196712443375).

921442495385 is a wasteful number, since it uses less digits than its factorization.

921442495385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070657387.

The product of its digits is 12441600, while the sum is 56.

The spelling of 921442495385 in words is "nine hundred twenty-one billion, four hundred forty-two million, four hundred ninety-five thousand, three hundred eighty-five".