1137847681 has 2 divisors, whose sum is σ = 1137847682. Its totient is φ = 1137847680.

The previous prime is 1137847637. The next prime is 1137847687. The reversal of 1137847681 is 1867487311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 741200625 + 396647056 = 27225^2 + 19916^2 .

It is a cyclic number.

It is not a de Polignac number, because 1137847681 - 2¹¹ = 1137845633 is a prime.

It is a super-2 number, since 2×1137847681² = 2589394690314155522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1137847687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568923840 + 568923841.

It is an arithmetic number, because the mean of its divisors is an integer number (568923841).

Almost surely, 2^1137847681 is an apocalyptic number.

It is an amenable number.

1137847681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1137847681 is an equidigital number, since it uses as much as digits as its factorization.

1137847681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 46.

The square root of 1137847681 is about 33731.9978803509. The cubic root of 1137847681 is about 1043.9860837069.

The spelling of 1137847681 in words is "one billion, one hundred thirty-seven million, eight hundred forty-seven thousand, six hundred eighty-one".