18457970 has 16 divisors (see below), whose sum is σ = 33367680. Its totient is φ = 7351344.

The previous prime is 18457969. The next prime is 18457991. The reversal of 18457970 is 7975481.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1472 + ... + 6251.

It is an arithmetic number, because the mean of its divisors is an integer number (2085480).

Almost surely, 2^18457970 is an apocalyptic number.

18457970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18457970 is a deficient number, since it is larger than the sum of its proper divisors (14909710).

18457970 is a wasteful number, since it uses less digits than its factorization.

18457970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7969.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 18457970 is about 4296.2739670556. The cubic root of 18457970 is about 264.2781828178.

The spelling of 18457970 in words is "eighteen million, four hundred fifty-seven thousand, nine hundred seventy".