927230051981 has 2 divisors, whose sum is σ = 927230051982. Its totient is φ = 927230051980.

The previous prime is 927230051963. The next prime is 927230051989. The reversal of 927230051981 is 189150032729.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 648330936100 + 278899115881 = 805190^2 + 528109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-927230051981 is a prime.

It is a super-2 number, since 2×927230051981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (927230051989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 463615025990 + 463615025991.

It is an arithmetic number, because the mean of its divisors is an integer number (463615025991).

Almost surely, 2^927230051981 is an apocalyptic number.

It is an amenable number.

927230051981 is a deficient number, since it is larger than the sum of its proper divisors (1).

927230051981 is an equidigital number, since it uses as much as digits as its factorization.

927230051981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 927230051981 in words is "nine hundred twenty-seven billion, two hundred thirty million, fifty-one thousand, nine hundred eighty-one".