1898420407488 has 896 divisors, whose sum is σ = 6793041024000. Its totient is φ = 513257472000.

The previous prime is 1898420407483. The next prime is 1898420407489. The reversal of 1898420407488 is 8847040248981.

1898420407488 is a `hidden beast` number, since 1 + 8 + 98 + 4 + 20 + 40 + 7 + 488 = 666.

It is not an unprimeable number, because it can be changed into a prime (1898420407483) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 429407518 + ... + 429411938.

It is an arithmetic number, because the mean of its divisors is an integer number (7581519000).

Almost surely, 2^{1898420407488} is an apocalyptic number.

1898420407488 is a gapful number since it is divisible by the number (18) 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 1898420407488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3396520512000).

1898420407488 is an abundant number, since it is smaller than the sum of its proper divisors (4894620616512).

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

1898420407488 is a wasteful number, since it uses less digits than its factorization.

1898420407488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4542 (or 4526 counting only the distinct ones).

The product of its (nonzero) digits is 33030144, while the sum is 63.

The spelling of 1898420407488 in words is "one trillion, eight hundred ninety-eight billion, four hundred twenty million, four hundred seven thousand, four hundred eighty-eight".