1898406 has 12 divisors (see below), whose sum is σ = 4113252. Its totient is φ = 632796.

The previous prime is 1898389. The next prime is 1898417. The reversal of 1898406 is 6048981.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52716 + ... + 52751.

It is an arithmetic number, because the mean of its divisors is an integer number (342771).

2^1898406 is an apocalyptic number.

1898406 is an abundant number, since it is smaller than the sum of its proper divisors (2214846).

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

1898406 is a wasteful number, since it uses less digits than its factorization.

1898406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105475 (or 105472 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1898406 is about 1377.8265493160. The cubic root of 1898406 is about 123.8215869856.

It can be divided in two parts, 1898 and 406, that added together give a square (2304 = 48²).

The spelling of 1898406 in words is "one million, eight hundred ninety-eight thousand, four hundred six".