1861334133 has 16 divisors (see below), whose sum is σ = 2593938816. Its totient is φ = 1184986880.

The previous prime is 1861334093. The next prime is 1861334171. The reversal of 1861334133 is 3314331681.

It is a cyclic number.

It is not a de Polignac number, because 1861334133 - 2¹³ = 1861325941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1861334094 and 1861334103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1861334533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20713 + ... + 64433.

It is an arithmetic number, because the mean of its divisors is an integer number (162121176).

Almost surely, 2^1861334133 is an apocalyptic number.

It is an amenable number.

1861334133 is a deficient number, since it is larger than the sum of its proper divisors (732604683).

1861334133 is a wasteful number, since it uses less digits than its factorization.

1861334133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44364.

The product of its digits is 15552, while the sum is 33.

The square root of 1861334133 is about 43143.1817672271. The cubic root of 1861334133 is about 1230.1029135914.

The spelling of 1861334133 in words is "one billion, eight hundred sixty-one million, three hundred thirty-four thousand, one hundred thirty-three".