18806770 has 48 divisors (see below), whose sum is σ = 37177920. Its totient is φ = 6829920.

The previous prime is 18806759. The next prime is 18806779. The reversal of 18806770 is 7760881.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18806779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 182539 + ... + 182641.

It is an arithmetic number, because the mean of its divisors is an integer number (774540).

Almost surely, 2^18806770 is an apocalyptic number.

18806770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18806770 is a deficient number, since it is larger than the sum of its proper divisors (18371150).

18806770 is a wasteful number, since it uses less digits than its factorization.

18806770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 18806770 is about 4336.6772995002. The cubic root of 18806770 is about 265.9324927150.

The spelling of 18806770 in words is "eighteen million, eight hundred six thousand, seven hundred seventy".