1898442 has 96 divisors (see below), whose sum is σ = 5416320. Its totient is φ = 466560.

The previous prime is 1898431. The next prime is 1898447. The reversal of 1898442 is 2448981.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 1898397 and 1898406.

It is not an unprimeable number, because it can be changed into a prime (1898447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31092 + ... + 31152.

It is an arithmetic number, because the mean of its divisors is an integer number (56420).

2^1898442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1898442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2708160).

1898442 is an abundant number, since it is smaller than the sum of its proper divisors (3517878).

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

1898442 is a wasteful number, since it uses less digits than its factorization.

1898442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 105 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 1898442 is about 1377.8396133077. The cubic root of 1898442 is about 123.8223696684.

The spelling of 1898442 in words is "one million, eight hundred ninety-eight thousand, four hundred forty-two".