18813470 has 16 divisors (see below), whose sum is σ = 36469440. Its totient is φ = 6946464.

The previous prime is 18813469. The next prime is 18813479. The reversal of 18813470 is 7431881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18813479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72230 + ... + 72489.

It is an arithmetic number, because the mean of its divisors is an integer number (2279340).

Almost surely, 2^18813470 is an apocalyptic number.

18813470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18813470 is a deficient number, since it is larger than the sum of its proper divisors (17655970).

18813470 is a wasteful number, since it uses less digits than its factorization.

18813470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144739.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 18813470 is about 4337.4497115240. The cubic root of 18813470 is about 265.9640688648.

The spelling of 18813470 in words is "eighteen million, eight hundred thirteen thousand, four hundred seventy".