187868742 has 32 divisors (see below), whose sum is σ = 388783104. Its totient is φ = 60458400.

The previous prime is 187868719. The next prime is 187868783. The reversal of 187868742 is 247868781.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 99693 + ... + 101559.

It is an arithmetic number, because the mean of its divisors is an integer number (12149472).

Almost surely, 2^187868742 is an apocalyptic number.

187868742 is an abundant number, since it is smaller than the sum of its proper divisors (200914362).

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

187868742 is a wasteful number, since it uses less digits than its factorization.

187868742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444.

The product of its digits is 1204224, while the sum is 51.

The square root of 187868742 is about 13706.5218782885. The cubic root of 187868742 is about 572.7320793339.

The spelling of 187868742 in words is "one hundred eighty-seven million, eight hundred sixty-eight thousand, seven hundred forty-two".