18963423 has 8 divisors (see below), whose sum is σ = 28094000. Its totient is φ = 12642264.

The previous prime is 18963421. The next prime is 18963487. The reversal of 18963423 is 32436981.

18963423 is a `hidden beast` number, since 18 + 9 + 634 + 2 + 3 = 666.

It is not a de Polignac number, because 18963423 - 2¹ = 18963421 is a prime.

It is a super-2 number, since 2×18963423² = 719222823753858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18963421) 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, 351148 + ... + 351201.

It is an arithmetic number, because the mean of its divisors is an integer number (3511750).

Almost surely, 2^18963423 is an apocalyptic number.

18963423 is a deficient number, since it is larger than the sum of its proper divisors (9130577).

18963423 is an equidigital number, since it uses as much as digits as its factorization.

18963423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702358 (or 702352 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 18963423 is about 4354.7012526693. The cubic root of 18963423 is about 266.6688230728.

The spelling of 18963423 in words is "eighteen million, nine hundred sixty-three thousand, four hundred twenty-three".