1889534454 has 16 divisors (see below), whose sum is σ = 3780665280. Its totient is φ = 629578760.

The previous prime is 1889534453. The next prime is 1889534459. The reversal of 1889534454 is 4544359881.

It is a junction number, because it is equal to n+sod(n) for n = 1889534397 and 1889534406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889534453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50844 + ... + 79775.

It is an arithmetic number, because the mean of its divisors is an integer number (236291580).

Almost surely, 2^1889534454 is an apocalyptic number.

1889534454 is an abundant number, since it is smaller than the sum of its proper divisors (1891130826).

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

1889534454 is a wasteful number, since it uses less digits than its factorization.

1889534454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133035.

The product of its digits is 2764800, while the sum is 51.

The square root of 1889534454 is about 43468.7756211283. The cubic root of 1889534454 is about 1236.2840658451.

The spelling of 1889534454 in words is "one billion, eight hundred eighty-nine million, five hundred thirty-four thousand, four hundred fifty-four".