18630452 has 6 divisors (see below), whose sum is σ = 32603298. Its totient is φ = 9315224.

The previous prime is 18630449. The next prime is 18630463. The reversal of 18630452 is 25403681.

It can be written as a sum of positive squares in only one way, i.e., 17007376 + 1623076 = 4124^2 + 1274^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2328803 + ... + 2328810.

It is an arithmetic number, because the mean of its divisors is an integer number (5433883).

Almost surely, 2^18630452 is an apocalyptic number.

It is an amenable number.

18630452 is a deficient number, since it is larger than the sum of its proper divisors (13972846).

18630452 is a wasteful number, since it uses less digits than its factorization.

18630452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4657617 (or 4657615 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 18630452 is about 4316.3007309501. The cubic root of 18630452 is about 265.0988215749.

The spelling of 18630452 in words is "eighteen million, six hundred thirty thousand, four hundred fifty-two".