1137943687 has 4 divisors (see below), whose sum is σ = 1197835480. Its totient is φ = 1078051896.

The previous prime is 1137943627. The next prime is 1137943711. The reversal of 1137943687 is 7863497311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7863497311 = 1657 ⋅4745623.

It is a cyclic number.

It is not a de Polignac number, because 1137943687 - 2¹¹ = 1137941639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1137943687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1137943627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29945868 + ... + 29945905.

It is an arithmetic number, because the mean of its divisors is an integer number (299458870).

Almost surely, 2^1137943687 is an apocalyptic number.

1137943687 is a deficient number, since it is larger than the sum of its proper divisors (59891793).

1137943687 is an equidigital number, since it uses as much as digits as its factorization.

1137943687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59891792.

The product of its digits is 762048, while the sum is 49.

The square root of 1137943687 is about 33733.4209205055. The cubic root of 1137943687 is about 1044.0154450209.

The spelling of 1137943687 in words is "one billion, one hundred thirty-seven million, nine hundred forty-three thousand, six hundred eighty-seven".