1859158242 has 18 divisors (see below), whose sum is σ = 4028572587. Its totient is φ = 619658436.

The previous prime is 1859158211. The next prime is 1859158247. The reversal of 1859158242 is 2428519581.

1859158242 is a `hidden beast` number, since 1 + 8 + 591 + 58 + 2 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 929579121 + 929579121 = 30489^2 + 30489^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=30489.

It is not an unprimeable number, because it can be changed into a prime (1859158247) 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 8 ways as a sum of consecutive naturals, for example, 177853 + ... + 188015.

Almost surely, 2^1859158242 is an apocalyptic number.

1859158242 is an abundant number, since it is smaller than the sum of its proper divisors (2169414345).

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

1859158242 is an frugal number, since it uses more digits than its factorization.

1859158242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20334 (or 10168 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The square root of 1859158242 is about 43117.9573031933. The cubic root of 1859158242 is about 1229.6233984854.

The spelling of 1859158242 in words is "one billion, eight hundred fifty-nine million, one hundred fifty-eight thousand, two hundred forty-two".