1856774713 has 2 divisors, whose sum is σ = 1856774714. Its totient is φ = 1856774712.

The previous prime is 1856774597. The next prime is 1856774719. The reversal of 1856774713 is 3174776581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1346376249 + 510398464 = 36693^2 + 22592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1856774713 is a prime.

It is a super-2 number, since 2×1856774713² = 6895224669672464738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1856774719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 928387356 + 928387357.

It is an arithmetic number, because the mean of its divisors is an integer number (928387357).

Almost surely, 2^1856774713 is an apocalyptic number.

It is an amenable number.

1856774713 is a deficient number, since it is larger than the sum of its proper divisors (1).

1856774713 is an equidigital number, since it uses as much as digits as its factorization.

1856774713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 987840, while the sum is 49.

The square root of 1856774713 is about 43090.3088060413. The cubic root of 1856774713 is about 1229.0976952667.

The spelling of 1856774713 in words is "one billion, eight hundred fifty-six million, seven hundred seventy-four thousand, seven hundred thirteen".