18740463 has 32 divisors (see below), whose sum is σ = 29767680. Its totient is φ = 10264320.

The previous prime is 18740453. The next prime is 18740473. The reversal of 18740463 is 36404781.

It is an interprime number because it is at equal distance from previous prime (18740453) and next prime (18740473).

It is not a de Polignac number, because 18740463 - 2⁵ = 18740431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18740453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69018 + ... + 69288.

It is an arithmetic number, because the mean of its divisors is an integer number (930240).

Almost surely, 2^18740463 is an apocalyptic number.

18740463 is a deficient number, since it is larger than the sum of its proper divisors (11027217).

18740463 is a wasteful number, since it uses less digits than its factorization.

18740463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 18740463 is about 4329.0256409497. The cubic root of 18740463 is about 265.6195921021.

The spelling of 18740463 in words is "eighteen million, seven hundred forty thousand, four hundred sixty-three".