920891146309 has 8 divisors (see below), whose sum is σ = 939467247480. Its totient is φ = 902427288000.

The previous prime is 920891146289. The next prime is 920891146333. The reversal of 920891146309 is 903641198029.

It can be written as a sum of positive squares in 4 ways, for example, as 155752569025 + 765138577284 = 394655^2 + 874722^2 .

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 920891146309 - 2¹³ = 920891138117 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 (920891149309) 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, 28044142 + ... + 28076959.

It is an arithmetic number, because the mean of its divisors is an integer number (117433405935).

Almost surely, 2^920891146309 is an apocalyptic number.

It is an amenable number.

920891146309 is a deficient number, since it is larger than the sum of its proper divisors (18576101171).

920891146309 is a wasteful number, since it uses less digits than its factorization.

920891146309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56121431.

The product of its (nonzero) digits is 839808, while the sum is 52.

The spelling of 920891146309 in words is "nine hundred twenty billion, eight hundred ninety-one million, one hundred forty-six thousand, three hundred nine".