1927307713481 has 2 divisors, whose sum is σ = 1927307713482. Its totient is φ = 1927307713480.

The previous prime is 1927307713477. The next prime is 1927307713483. The reversal of 1927307713481 is 1843177037291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1421779603456 + 505528110025 = 1192384^2 + 711005^2 .

It is a cyclic number.

It is not a de Polignac number, because 1927307713481 - 2² = 1927307713477 is a prime.

It is a super-2 number, since 2×1927307713481² (a number of 25 digits) contains 22 as substring.

Together with 1927307713483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1927307713483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 963653856740 + 963653856741.

It is an arithmetic number, because the mean of its divisors is an integer number (963653856741).

Almost surely, 2^{1927307713481} is an apocalyptic number.

It is an amenable number.

1927307713481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1927307713481 is an equidigital number, since it uses as much as digits as its factorization.

1927307713481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 1927307713481 in words is "one trillion, nine hundred twenty-seven billion, three hundred seven million, seven hundred thirteen thousand, four hundred eighty-one".