1881894742 has 64 divisors (see below), whose sum is σ = 3670216704. Its totient is φ = 703624320.

The previous prime is 1881894719. The next prime is 1881894743. The reversal of 1881894742 is 2474981881.

It is a self number, because there is not a number n which added to its sum of digits gives 1881894742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881894743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238728 + ... + 246484.

It is an arithmetic number, because the mean of its divisors is an integer number (57347136).

Almost surely, 2^1881894742 is an apocalyptic number.

1881894742 is a deficient number, since it is larger than the sum of its proper divisors (1788321962).

1881894742 is a wasteful number, since it uses less digits than its factorization.

1881894742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7853.

The product of its digits is 1032192, while the sum is 52.

The square root of 1881894742 is about 43380.8107577532. The cubic root of 1881894742 is about 1234.6156457187.

The spelling of 1881894742 in words is "one billion, eight hundred eighty-one million, eight hundred ninety-four thousand, seven hundred forty-two".