1889760138 has 16 divisors (see below), whose sum is σ = 4319451840. Its totient is φ = 539931456.

The previous prime is 1889760107. The next prime is 1889760149. The reversal of 1889760138 is 8310679881.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22497103 + ... + 22497186.

It is an arithmetic number, because the mean of its divisors is an integer number (269965740).

Almost surely, 2^1889760138 is an apocalyptic number.

1889760138 is an abundant number, since it is smaller than the sum of its proper divisors (2429691702).

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

1889760138 is a wasteful number, since it uses less digits than its factorization.

1889760138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44994301.

The product of its (nonzero) digits is 580608, while the sum is 51.

The square root of 1889760138 is about 43471.3714759495. The cubic root of 1889760138 is about 1236.3332840401. Note that the first 3 decimals are identical.

The spelling of 1889760138 in words is "one billion, eight hundred eighty-nine million, seven hundred sixty thousand, one hundred thirty-eight".