18750469 has 2 divisors, whose sum is σ = 18750470. Its totient is φ = 18750468.

The previous prime is 18750467. The next prime is 18750493. The reversal of 18750469 is 96405781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18378369 + 372100 = 4287^2 + 610^2 .

It is a cyclic number.

It is not a de Polignac number, because 18750469 - 2¹ = 18750467 is a prime.

It is a super-2 number, since 2×18750469² = 703160175439922, which contains 22 as substring.

Together with 18750467, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18750467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9375234 + 9375235.

It is an arithmetic number, because the mean of its divisors is an integer number (9375235).

Almost surely, 2^18750469 is an apocalyptic number.

It is an amenable number.

18750469 is a deficient number, since it is larger than the sum of its proper divisors (1).

18750469 is an equidigital number, since it uses as much as digits as its factorization.

18750469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 18750469 is about 4330.1811740388. The cubic root of 18750469 is about 265.6668573299. Note that the first 3 decimals are identical.

The spelling of 18750469 in words is "eighteen million, seven hundred fifty thousand, four hundred sixty-nine".