1898634120 has 128 divisors (see below), whose sum is σ = 6043818240. Its totient is φ = 475504640.

The previous prime is 1898634119. The next prime is 1898634121. The reversal of 1898634120 is 214368981.

It is an interprime number because it is at equal distance from previous prime (1898634119) and next prime (1898634121).

It is not an unprimeable number, because it can be changed into a prime (1898634121) 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, 1551829 + ... + 1553051.

It is an arithmetic number, because the mean of its divisors is an integer number (47217330).

Almost surely, 2^1898634120 is an apocalyptic number.

1898634120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1898634120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3021909120).

1898634120 is an abundant number, since it is smaller than the sum of its proper divisors (4145184120).

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

1898634120 is a wasteful number, since it uses less digits than its factorization.

1898634120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015 (or 2011 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 1898634120 is about 43573.3189004464. The cubic root of 1898634120 is about 1238.2654641807.

The spelling of 1898634120 in words is "one billion, eight hundred ninety-eight million, six hundred thirty-four thousand, one hundred twenty".