1889244672 has 320 divisors, whose sum is σ = 6104609280. Its totient is φ = 507838464.

The previous prime is 1889244671. The next prime is 1889244673. The reversal of 1889244672 is 2764429881.

It is an interprime number because it is at equal distance from previous prime (1889244671) and next prime (1889244673).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889244671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22761943 + ... + 22762025.

It is an arithmetic number, because the mean of its divisors is an integer number (19076904).

Almost surely, 2^1889244672 is an apocalyptic number.

1889244672 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 1889244672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3052304640).

1889244672 is an abundant number, since it is smaller than the sum of its proper divisors (4215364608).

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

1889244672 is an equidigital number, since it uses as much as digits as its factorization.

1889244672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 197 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The square root of 1889244672 is about 43465.4422731438. The cubic root of 1889244672 is about 1236.2208631192.

The spelling of 1889244672 in words is "one billion, eight hundred eighty-nine million, two hundred forty-four thousand, six hundred seventy-two".