921194375417 has 2 divisors, whose sum is σ = 921194375418. Its totient is φ = 921194375416.

The previous prime is 921194375401. The next prime is 921194375537. The reversal of 921194375417 is 714573491129.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 915014686096 + 6179689321 = 956564^2 + 78611^2 .

It is a cyclic number.

It is not a de Polignac number, because 921194375417 - 2⁴ = 921194375401 is a prime.

It is not a weakly prime, because it can be changed into another prime (921194305417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460597187708 + 460597187709.

It is an arithmetic number, because the mean of its divisors is an integer number (460597187709).

Almost surely, 2^921194375417 is an apocalyptic number.

It is an amenable number.

921194375417 is a deficient number, since it is larger than the sum of its proper divisors (1).

921194375417 is an equidigital number, since it uses as much as digits as its factorization.

921194375417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 53.

The spelling of 921194375417 in words is "nine hundred twenty-one billion, one hundred ninety-four million, three hundred seventy-five thousand, four hundred seventeen".