1898123472 has 120 divisors (see below), whose sum is σ = 6090393920. Its totient is φ = 540587520.

The previous prime is 1898123419. The next prime is 1898123473. The reversal of 1898123472 is 2743218981.

It is a happy number.

1898123472 is a `hidden beast` number, since 1 + 89 + 81 + 23 + 472 = 666.

It is a nude number because it is divisible by every one of its digits.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898123473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 330804 + ... + 336492.

Almost surely, 2^1898123472 is an apocalyptic number.

1898123472 is a gapful number since it is divisible by the number (12) 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 1898123472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3045196960).

1898123472 is an abundant number, since it is smaller than the sum of its proper divisors (4192270448).

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

1898123472 is a wasteful number, since it uses less digits than its factorization.

1898123472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6041 (or 6032 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 1898123472 is about 43567.4588655340. The cubic root of 1898123472 is about 1238.1544414770.

The spelling of 1898123472 in words is "one billion, eight hundred ninety-eight million, one hundred twenty-three thousand, four hundred seventy-two".