18629361 has 6 divisors (see below), whose sum is σ = 26909090. Its totient is φ = 12419568.

The previous prime is 18629327. The next prime is 18629371. The reversal of 18629361 is 16392681.

It can be written as a sum of positive squares in only one way, i.e., 17514225 + 1115136 = 4185^2 + 1056^2 .

It is not a de Polignac number, because 18629361 - 2¹⁵ = 18596593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18629371) 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 5 ways as a sum of consecutive naturals, for example, 1034956 + ... + 1034973.

Almost surely, 2^18629361 is an apocalyptic number.

It is an amenable number.

18629361 is a deficient number, since it is larger than the sum of its proper divisors (8279729).

18629361 is a wasteful number, since it uses less digits than its factorization.

18629361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069935 (or 2069932 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 18629361 is about 4316.1743477297. The cubic root of 18629361 is about 265.0936467415.

The spelling of 18629361 in words is "eighteen million, six hundred twenty-nine thousand, three hundred sixty-one".