18397070 has 16 divisors (see below), whose sum is σ = 33237648. Its totient is φ = 7331520.

The previous prime is 18397063. The next prime is 18397081. The reversal of 18397070 is 7079381.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18397070.

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 7 ways as a sum of consecutive naturals, for example, 464 + ... + 6083.

It is an arithmetic number, because the mean of its divisors is an integer number (2077353).

Almost surely, 2^18397070 is an apocalyptic number.

18397070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18397070 is a deficient number, since it is larger than the sum of its proper divisors (14840578).

18397070 is a wasteful number, since it uses less digits than its factorization.

18397070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6835.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 18397070 is about 4289.1805744221. The cubic root of 18397070 is about 263.9872105068.

The spelling of 18397070 in words is "eighteen million, three hundred ninety-seven thousand, seventy".