1143815 has 8 divisors (see below), whose sum is σ = 1386528. Its totient is φ = 905760.

The previous prime is 1143809. The next prime is 1143817. The reversal of 1143815 is 5183411.

1143815 = T₃₈₃ + T₃₈₄ + ... + T₃₉₇.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1143815 - 2⁴ = 1143799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596 + ... + 1625.

It is an arithmetic number, because the mean of its divisors is an integer number (173316).

2^1143815 is an apocalyptic number.

1143815 is a deficient number, since it is larger than the sum of its proper divisors (242713).

1143815 is a wasteful number, since it uses less digits than its factorization.

1143815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329.

The product of its digits is 480, while the sum is 23.

The square root of 1143815 is about 1069.4928704765. The cubic root of 1143815 is about 104.5807926594.

The spelling of 1143815 in words is "one million, one hundred forty-three thousand, eight hundred fifteen".