1889935542 has 72 divisors (see below), whose sum is σ = 4530450288. Its totient is φ = 568956960.

The previous prime is 1889935517. The next prime is 1889935547. The reversal of 1889935542 is 2455399881.

1889935542 is a `hidden beast` number, since 1 + 8 + 8 + 9 + 93 + 5 + 542 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889935547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 339183 + ... + 344709.

Almost surely, 2^1889935542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1889935542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2265225144).

1889935542 is an abundant number, since it is smaller than the sum of its proper divisors (2640514746).

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

1889935542 is a wasteful number, since it uses less digits than its factorization.

1889935542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5714 (or 5700 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The square root of 1889935542 is about 43473.3888948170. The cubic root of 1889935542 is about 1236.3715342374.

The spelling of 1889935542 in words is "one billion, eight hundred eighty-nine million, nine hundred thirty-five thousand, five hundred forty-two".