916928925281 has 2 divisors, whose sum is σ = 916928925282. Its totient is φ = 916928925280.

The previous prime is 916928925277. The next prime is 916928925293. The reversal of 916928925281 is 182529829619.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 688636085281 + 228292840000 = 829841^2 + 477800^2 .

It is an emirp because it is prime and its reverse (182529829619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 916928925281 - 2² = 916928925277 is a prime.

It is a super-2 number, since 2×916928925281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (916928925881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458464462640 + 458464462641.

It is an arithmetic number, because the mean of its divisors is an integer number (458464462641).

Almost surely, 2^916928925281 is an apocalyptic number.

It is an amenable number.

916928925281 is a deficient number, since it is larger than the sum of its proper divisors (1).

916928925281 is an equidigital number, since it uses as much as digits as its factorization.

916928925281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11197440, while the sum is 62.

The spelling of 916928925281 in words is "nine hundred sixteen billion, nine hundred twenty-eight million, nine hundred twenty-five thousand, two hundred eighty-one".