1355818 has 8 divisors (see below), whose sum is σ = 2153412. Its totient is φ = 638016.

The previous prime is 1355807. The next prime is 1355819. The reversal of 1355818 is 8185531.

It can be written as a sum of positive squares in 2 ways, for example, as 1352569 + 3249 = 1163^2 + 57^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1355818.

It is not an unprimeable number, because it can be changed into a prime (1355819) 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, 19905 + ... + 19972.

2^1355818 is an apocalyptic number.

1355818 is a deficient number, since it is larger than the sum of its proper divisors (797594).

1355818 is a wasteful number, since it uses less digits than its factorization.

1355818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39896.

The product of its digits is 4800, while the sum is 31.

The square root of 1355818 is about 1164.3959807557. The cubic root of 1355818 is about 110.6794855395.

The spelling of 1355818 in words is "one million, three hundred fifty-five thousand, eight hundred eighteen".