1898130 has 64 divisors (see below), whose sum is σ = 5096448. Its totient is φ = 449280.

The previous prime is 1898123. The next prime is 1898131. The reversal of 1898130 is 318981.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1898131) 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, 12012 + ... + 12168.

It is an arithmetic number, because the mean of its divisors is an integer number (79632).

2^1898130 is an apocalyptic number.

1898130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1898130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2548224).

1898130 is an abundant number, since it is smaller than the sum of its proper divisors (3198318).

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

1898130 is a wasteful number, since it uses less digits than its factorization.

1898130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1898130 is about 1377.7263879305. The cubic root of 1898130 is about 123.8155860890.

The spelling of 1898130 in words is "one million, eight hundred ninety-eight thousand, one hundred thirty".