1898478144 has 168 divisors, whose sum is σ = 5800953600. Its totient is φ = 592238592.

The previous prime is 1898478143. The next prime is 1898478163. The reversal of 1898478144 is 4418748981.

It is not an unprimeable number, because it can be changed into a prime (1898478143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 621132 + ... + 624180.

Almost surely, 2^1898478144 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 1898478144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2900476800).

1898478144 is an abundant number, since it is smaller than the sum of its proper divisors (3902475456).

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

1898478144 is a wasteful number, since it uses less digits than its factorization.

1898478144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3137 (or 3124 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 54.

The square root of 1898478144 is about 43571.5290528115. The cubic root of 1898478144 is about 1238.2315547189.

The spelling of 1898478144 in words is "one billion, eight hundred ninety-eight million, four hundred seventy-eight thousand, one hundred forty-four".