1151838 has 24 divisors (see below), whose sum is σ = 2527200. Its totient is φ = 379104.

The previous prime is 1151807. The next prime is 1151861. The reversal of 1151838 is 8381511.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1243 + ... + 1961.

It is an arithmetic number, because the mean of its divisors is an integer number (105300).

2^1151838 is an apocalyptic number.

1151838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1151838 is an abundant number, since it is smaller than the sum of its proper divisors (1375362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1151838 is a wasteful number, since it uses less digits than its factorization.

1151838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816 (or 813 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 1151838 is about 1073.2371592523. The cubic root of 1151838 is about 104.8247416479.

It can be divided in two parts, 115 and 1838, that added together give a triangular number (1953 = T₆₂).

The spelling of 1151838 in words is "one million, one hundred fifty-one thousand, eight hundred thirty-eight".