1011838 has 4 divisors (see below), whose sum is σ = 1517760. Its totient is φ = 505918.

The previous prime is 1011827. The next prime is 1011889. The reversal of 1011838 is 8381101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8381101 = 149 ⋅56249.

It is a super-2 number, since 2×1011838² = 2047632276488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 252958 + ... + 252961.

It is an arithmetic number, because the mean of its divisors is an integer number (379440).

2^1011838 is an apocalyptic number.

1011838 is a deficient number, since it is larger than the sum of its proper divisors (505922).

1011838 is an equidigital number, since it uses as much as digits as its factorization.

1011838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505921.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 1011838 is about 1005.9015856434. The cubic root of 1011838 is about 100.3930530687.

Adding to 1011838 its reverse (8381101), we get a palindrome (9392939).

It can be divided in two parts, 1011 and 838, that added together give a square (1849 = 43²).

The spelling of 1011838 in words is "one million, eleven thousand, eight hundred thirty-eight".