1137447681 has 16 divisors (see below), whose sum is σ = 1612400256. Its totient is φ = 711641216.

The previous prime is 1137447637. The next prime is 1137447709. The reversal of 1137447681 is 1867447311.

It is a cyclic number.

It is not a de Polignac number, because 1137447681 - 2¹⁴ = 1137431297 is a prime.

It is a super-3 number, since 3×1137447681³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1137447581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151860 + ... + 159173.

It is an arithmetic number, because the mean of its divisors is an integer number (100775016).

Almost surely, 2^1137447681 is an apocalyptic number.

It is an amenable number.

1137447681 is a deficient number, since it is larger than the sum of its proper divisors (474952575).

1137447681 is a wasteful number, since it uses less digits than its factorization.

1137447681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311112.

The product of its digits is 112896, while the sum is 42.

The square root of 1137447681 is about 33726.0682707012. The cubic root of 1137447681 is about 1043.8637347657.

The spelling of 1137447681 in words is "one billion, one hundred thirty-seven million, four hundred forty-seven thousand, six hundred eighty-one".