1137889 has 2 divisors, whose sum is σ = 1137890. Its totient is φ = 1137888.

The previous prime is 1137887. The next prime is 1137911. The reversal of 1137889 is 9887311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 795664 + 342225 = 892^2 + 585^2 .

It is a cyclic number.

It is not a de Polignac number, because 1137889 - 2¹ = 1137887 is a prime.

Together with 1137887, it forms a pair of twin primes.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (1137881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568944 + 568945.

It is an arithmetic number, because the mean of its divisors is an integer number (568945).

2^1137889 is an apocalyptic number.

It is an amenable number.

1137889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1137889 is an equidigital number, since it uses as much as digits as its factorization.

1137889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 37.

The square root of 1137889 is about 1066.7188008093. The cubic root of 1137889 is about 104.3998720413.

The spelling of 1137889 in words is "one million, one hundred thirty-seven thousand, eight hundred eighty-nine".