1825818 has 8 divisors (see below), whose sum is σ = 3651648. Its totient is φ = 608604.

The previous prime is 1825787. The next prime is 1825819. The reversal of 1825818 is 8185281.

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

1825818 is an admirable number.

It is a super-2 number, since 2×1825818² = 6667222738248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1825819) 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, 152146 + ... + 152157.

It is an arithmetic number, because the mean of its divisors is an integer number (456456).

2^1825818 is an apocalyptic number.

1825818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1825818 is a wasteful number, since it uses less digits than its factorization.

1825818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304308.

The product of its digits is 5120, while the sum is 33.

The square root of 1825818 is about 1351.2283300760. The cubic root of 1825818 is about 122.2228748664. Note that the first 3 decimals are identical.

The spelling of 1825818 in words is "one million, eight hundred twenty-five thousand, eight hundred eighteen".