186418628906 has 4 divisors (see below), whose sum is σ = 279627943362. Its totient is φ = 93209314452.

The previous prime is 186418628897. The next prime is 186418628909. The reversal of 186418628906 is 609826814681.

186418628906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 93244118881 + 93174510025 = 305359^2 + 305245^2 .

It is not an unprimeable number, because it can be changed into a prime (186418628909) 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 as a sum of consecutive naturals, namely, 46604657225 + ... + 46604657228.

Almost surely, 2^186418628906 is an apocalyptic number.

186418628906 is a deficient number, since it is larger than the sum of its proper divisors (93209314456).

186418628906 is an equidigital number, since it uses as much as digits as its factorization.

186418628906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93209314455.

The product of its (nonzero) digits is 7962624, while the sum is 59.

The spelling of 186418628906 in words is "one hundred eighty-six billion, four hundred eighteen million, six hundred twenty-eight thousand, nine hundred six".