18494029 has 4 divisors (see below), whose sum is σ = 18618300. Its totient is φ = 18369760.

The previous prime is 18493997. The next prime is 18494033. The reversal of 18494029 is 92049481.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5280804 + 13213225 = 2298^2 + 3635^2 .

It is a cyclic number.

It is not a de Polignac number, because 18494029 - 2⁵ = 18493997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18491029) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 61912 + ... + 62209.

It is an arithmetic number, because the mean of its divisors is an integer number (4654575).

Almost surely, 2^18494029 is an apocalyptic number.

It is an amenable number.

18494029 is a deficient number, since it is larger than the sum of its proper divisors (124271).

18494029 is a wasteful number, since it uses less digits than its factorization.

18494029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124270.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 18494029 is about 4300.4684628538. The cubic root of 18494029 is about 264.4501664853.

The spelling of 18494029 in words is "eighteen million, four hundred ninety-four thousand, twenty-nine".