18769970 has 16 divisors (see below), whose sum is σ = 33848280. Its totient is φ = 7494144.

The previous prime is 18769969. The next prime is 18769991. The reversal of 18769970 is 7996781.

It can be written as a sum of positive squares in 4 ways, for example, as 14661241 + 4108729 = 3829^2 + 2027^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5336 + ... + 8124.

Almost surely, 2^18769970 is an apocalyptic number.

18769970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18769970 is a deficient number, since it is larger than the sum of its proper divisors (15078310).

18769970 is a wasteful number, since it uses less digits than its factorization.

18769970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3469.

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 18769970 is about 4332.4323422299. The cubic root of 18769970 is about 265.7589256825.

The spelling of 18769970 in words is "eighteen million, seven hundred sixty-nine thousand, nine hundred seventy".