1145818 has 4 divisors (see below), whose sum is σ = 1718730. Its totient is φ = 572908.

The previous prime is 1145803. The next prime is 1145831. The reversal of 1145818 is 8185411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1014049 + 131769 = 1007^2 + 363^2 .

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, 286453 + ... + 286456.

2^1145818 is an apocalyptic number.

1145818 is a deficient number, since it is larger than the sum of its proper divisors (572912).

1145818 is an equidigital number, since it uses as much as digits as its factorization.

1145818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572911.

The product of its digits is 1280, while the sum is 28.

The square root of 1145818 is about 1070.4288860078. The cubic root of 1145818 is about 104.6418028670.

It can be divided in two parts, 11458 and 18, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 1145818 in words is "one million, one hundred forty-five thousand, eight hundred eighteen".