186930768 has 20 divisors (see below), whose sum is σ = 482904608. Its totient is φ = 62310240.

The previous prime is 186930719. The next prime is 186930769. The reversal of 186930768 is 867039681.

It is a super-2 number, since 2×186930768² = 69886224050139648, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 3894391 = 186930768 / (1 + 8 + 6 + 9 + 3 + 0 + 7 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (186930769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1947148 + ... + 1947243.

Almost surely, 2^186930768 is an apocalyptic number.

It is an amenable number.

186930768 is an abundant number, since it is smaller than the sum of its proper divisors (295973840).

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

186930768 is a wasteful number, since it uses less digits than its factorization.

186930768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894402 (or 3894396 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 186930768 is about 13672.2627242165. The cubic root of 186930768 is about 571.7773270557. Note that the first 3 decimals are identical.

The spelling of 186930768 in words is "one hundred eighty-six million, nine hundred thirty thousand, seven hundred sixty-eight".