18734629 has 8 divisors (see below), whose sum is σ = 19894680. Its totient is φ = 17581056.

The previous prime is 18734603. The next prime is 18734641. The reversal of 18734629 is 92643781.

It can be written as a sum of positive squares in 4 ways, for example, as 2169729 + 16564900 = 1473^2 + 4070^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 18734629 - 2²¹ = 16637477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18734591 and 18734600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18734129) 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, 5197 + ... + 8029.

It is an arithmetic number, because the mean of its divisors is an integer number (2486835).

Almost surely, 2^18734629 is an apocalyptic number.

It is an amenable number.

18734629 is a deficient number, since it is larger than the sum of its proper divisors (1160051).

18734629 is a wasteful number, since it uses less digits than its factorization.

18734629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239.

The product of its digits is 72576, while the sum is 40.

The square root of 18734629 is about 4328.3517648176. The cubic root of 18734629 is about 265.5920263383.

The spelling of 18734629 in words is "eighteen million, seven hundred thirty-four thousand, six hundred twenty-nine".