1898988 has 96 divisors (see below), whose sum is σ = 5720064. Its totient is φ = 476928.

The previous prime is 1898983. The next prime is 1899017. The reversal of 1898988 is 8898981.

It is a self number, because there is not a number n which added to its sum of digits gives 1898988.

It is not an unprimeable number, because it can be changed into a prime (1898983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40381 + ... + 40427.

It is an arithmetic number, because the mean of its divisors is an integer number (59584).

2^1898988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1898988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2860032).

1898988 is an abundant number, since it is smaller than the sum of its proper divisors (3821076).

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

1898988 is a wasteful number, since it uses less digits than its factorization.

1898988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 109 counting only the distinct ones).

The product of its digits is 331776, while the sum is 51.

The square root of 1898988 is about 1378.0377353324. The cubic root of 1898988 is about 123.8342391440.

The spelling of 1898988 in words is "one million, eight hundred ninety-eight thousand, nine hundred eighty-eight".