921061793 has 2 divisors, whose sum is σ = 921061794. Its totient is φ = 921061792.

The previous prime is 921061789. The next prime is 921061811. The reversal of 921061793 is 397160129.

It is a happy number.

921061793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 918574864 + 2486929 = 30308^2 + 1577^2 .

It is an emirp because it is prime and its reverse (397160129) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 921061793 - 2² = 921061789 is a prime.

It is not a weakly prime, because it can be changed into another prime (921066793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460530896 + 460530897.

It is an arithmetic number, because the mean of its divisors is an integer number (460530897).

Almost surely, 2^921061793 is an apocalyptic number.

It is an amenable number.

921061793 is a deficient number, since it is larger than the sum of its proper divisors (1).

921061793 is an equidigital number, since it uses as much as digits as its factorization.

921061793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 921061793 is about 30348.9998681999. Note that the first 3 decimals coincide. The cubic root of 921061793 is about 972.9628446896.

The spelling of 921061793 in words is "nine hundred twenty-one million, sixty-one thousand, seven hundred ninety-three".