1864868142 has 64 divisors (see below), whose sum is σ = 4096008000. Its totient is φ = 563404800.

The previous prime is 1864868119. The next prime is 1864868189. The reversal of 1864868142 is 2418684681.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1864868091 and 1864868100.

It is a congruent number.

It is an unprimeable number.

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, 1777234 + ... + 1778282.

It is an arithmetic number, because the mean of its divisors is an integer number (64000125).

Almost surely, 2^1864868142 is an apocalyptic number.

1864868142 is an abundant number, since it is smaller than the sum of its proper divisors (2231139858).

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

1864868142 is a wasteful number, since it uses less digits than its factorization.

1864868142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701.

The product of its digits is 589824, while the sum is 48.

The square root of 1864868142 is about 43184.1190948710. The cubic root of 1864868142 is about 1230.8809301642.

The spelling of 1864868142 in words is "one billion, eight hundred sixty-four million, eight hundred sixty-eight thousand, one hundred forty-two".