18856970 has 16 divisors (see below), whose sum is σ = 37028448. Its totient is φ = 6857040.

The previous prime is 18856969. The next prime is 18856979. The reversal of 18856970 is 7965881.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18856979) 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 7 ways as a sum of consecutive naturals, for example, 85604 + ... + 85823.

It is an arithmetic number, because the mean of its divisors is an integer number (2314278).

Almost surely, 2^18856970 is an apocalyptic number.

18856970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18856970 is a deficient number, since it is larger than the sum of its proper divisors (18171478).

18856970 is a wasteful number, since it uses less digits than its factorization.

18856970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171445.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 18856970 is about 4342.4612836501. The cubic root of 18856970 is about 266.1688960725.

The spelling of 18856970 in words is "eighteen million, eight hundred fifty-six thousand, nine hundred seventy".