1889349450 has 24 divisors (see below), whose sum is σ = 4685587008. Its totient is φ = 503826480.

The previous prime is 1889349443. The next prime is 1889349479. The reversal of 1889349450 is 549439881.

1889349450 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1889349393 and 1889349402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6297682 + ... + 6297981.

It is an arithmetic number, because the mean of its divisors is an integer number (195232792).

Almost surely, 2^1889349450 is an apocalyptic number.

1889349450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1889349450 is an abundant number, since it is smaller than the sum of its proper divisors (2796237558).

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

1889349450 is a wasteful number, since it uses less digits than its factorization.

1889349450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12595678 (or 12595673 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The square root of 1889349450 is about 43466.6475587893. The cubic root of 1889349450 is about 1236.2437164067.

The spelling of 1889349450 in words is "one billion, eight hundred eighty-nine million, three hundred forty-nine thousand, four hundred fifty".