1138837 has 4 divisors (see below), whose sum is σ = 1301536. Its totient is φ = 976140.

The previous prime is 1138831. The next prime is 1138849. The reversal of 1138837 is 7388311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1138837 - 2³ = 1138829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1138799 and 1138808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138831) 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, 81339 + ... + 81352.

It is an arithmetic number, because the mean of its divisors is an integer number (325384).

2^1138837 is an apocalyptic number.

It is an amenable number.

1138837 is a deficient number, since it is larger than the sum of its proper divisors (162699).

1138837 is an equidigital number, since it uses as much as digits as its factorization.

1138837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162698.

The product of its digits is 4032, while the sum is 31.

The square root of 1138837 is about 1067.1630615796. The cubic root of 1138837 is about 104.4288565926.

The spelling of 1138837 in words is "one million, one hundred thirty-eight thousand, eight hundred thirty-seven".