1808948 has 12 divisors (see below), whose sum is σ = 3189732. Its totient is φ = 897600.

The previous prime is 1808923. The next prime is 1808951. The reversal of 1808948 is 8498081.

It can be written as a sum of positive squares in 2 ways, for example, as 702244 + 1106704 = 838^2 + 1052^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1103 + ... + 2198.

It is an arithmetic number, because the mean of its divisors is an integer number (265811).

2^1808948 is an apocalyptic number.

It is an amenable number.

1808948 is a deficient number, since it is larger than the sum of its proper divisors (1380784).

1808948 is a wasteful number, since it uses less digits than its factorization.

1808948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442 (or 3440 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 1808948 is about 1344.9713751601. The cubic root of 1808948 is about 121.8452755036.

The spelling of 1808948 in words is "one million, eight hundred eight thousand, nine hundred forty-eight".