1801948 has 6 divisors (see below), whose sum is σ = 3153416. Its totient is φ = 900972.

The previous prime is 1801931. The next prime is 1801967. The reversal of 1801948 is 8491081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225240 + ... + 225247.

2^1801948 is an apocalyptic number.

It is an amenable number.

1801948 is a deficient number, since it is larger than the sum of its proper divisors (1351468).

1801948 is a wasteful number, since it uses less digits than its factorization.

1801948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450491 (or 450489 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 1801948 is about 1342.3665669257. The cubic root of 1801948 is about 121.6879060520.

The spelling of 1801948 in words is "one million, eight hundred one thousand, nine hundred forty-eight".