18464629 has 4 divisors (see below), whose sum is σ = 18655084. Its totient is φ = 18274176.

The previous prime is 18464603. The next prime is 18464647. The reversal of 18464629 is 92646481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92646481 = 17 ⋅5449793.

It can be written as a sum of positive squares in 2 ways, for example, as 2480625 + 15984004 = 1575^2 + 3998^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18464629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18464591 and 18464600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18464659) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95082 + ... + 95275.

It is an arithmetic number, because the mean of its divisors is an integer number (4663771).

Almost surely, 2^18464629 is an apocalyptic number.

It is an amenable number.

18464629 is a deficient number, since it is larger than the sum of its proper divisors (190455).

18464629 is an equidigital number, since it uses as much as digits as its factorization.

18464629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190454.

The product of its digits is 82944, while the sum is 40.

The square root of 18464629 is about 4297.0488710276. The cubic root of 18464629 is about 264.3099598195.

The spelling of 18464629 in words is "eighteen million, four hundred sixty-four thousand, six hundred twenty-nine".