1889288948 has 18 divisors (see below), whose sum is σ = 3512183766. Its totient is φ = 889076608.

The previous prime is 1889288941. The next prime is 1889288953. The reversal of 1889288948 is 8498829881.

It can be written as a sum of positive squares in 3 ways, for example, as 693374224 + 1195914724 = 26332^2 + 34582^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889288941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 816011 + ... + 818322.

Almost surely, 2^1889288948 is an apocalyptic number.

It is an amenable number.

1889288948 is a deficient number, since it is larger than the sum of its proper divisors (1622894818).

1889288948 is a wasteful number, since it uses less digits than its factorization.

1889288948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634371 (or 1634352 counting only the distinct ones).

The product of its digits is 21233664, while the sum is 65.

The square root of 1889288948 is about 43465.9515943227. The cubic root of 1889288948 is about 1236.2305203274.

The spelling of 1889288948 in words is "one billion, eight hundred eighty-nine million, two hundred eighty-eight thousand, nine hundred forty-eight".