18930570 has 32 divisors (see below), whose sum is σ = 45601920. Its totient is φ = 5029440.

The previous prime is 18930539. The next prime is 18930577. The reversal of 18930570 is 7503981.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18930577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8316 + ... + 10344.

It is an arithmetic number, because the mean of its divisors is an integer number (1425060).

Almost surely, 2^18930570 is an apocalyptic number.

18930570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18930570 is an abundant number, since it is smaller than the sum of its proper divisors (26671350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18930570 is a wasteful number, since it uses less digits than its factorization.

18930570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2350.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 18930570 is about 4350.9274873296. The cubic root of 18930570 is about 266.5147381106.

The spelling of 18930570 in words is "eighteen million, nine hundred thirty thousand, five hundred seventy".