18653434 has 8 divisors (see below), whose sum is σ = 28439028. Its totient is φ = 9173760.

The previous prime is 18653431. The next prime is 18653447. The reversal of 18653434 is 43435681.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18533025 + 120409 = 4305^2 + 347^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18653434.

It is not an unprimeable number, because it can be changed into a prime (18653431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76327 + ... + 76570.

Almost surely, 2^18653434 is an apocalyptic number.

18653434 is a deficient number, since it is larger than the sum of its proper divisors (9785594).

18653434 is a wasteful number, since it uses less digits than its factorization.

18653434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152960.

The product of its digits is 34560, while the sum is 34.

The square root of 18653434 is about 4318.9621438489. The cubic root of 18653434 is about 265.2077829258.

The spelling of 18653434 in words is "eighteen million, six hundred fifty-three thousand, four hundred thirty-four".