1818361626 has 8 divisors (see below), whose sum is σ = 3636723264. Its totient is φ = 606120540.

The previous prime is 1818361621. The next prime is 1818361673. The reversal of 1818361626 is 6261638181.

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

1818361626 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1818361621) 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, 151530130 + ... + 151530141.

It is an arithmetic number, because the mean of its divisors is an integer number (454590408).

Almost surely, 2^1818361626 is an apocalyptic number.

1818361626 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.

1818361626 is a wasteful number, since it uses less digits than its factorization.

1818361626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303060276.

The product of its digits is 82944, while the sum is 42.

The square root of 1818361626 is about 42642.2516525570. The cubic root of 1818361626 is about 1220.5626773816.

The spelling of 1818361626 in words is "one billion, eight hundred eighteen million, three hundred sixty-one thousand, six hundred twenty-six".