18849616 has 10 divisors (see below), whose sum is σ = 36521162. Its totient is φ = 9424800.

The previous prime is 18849601. The next prime is 18849619. The reversal of 18849616 is 61694881.

It can be written as a sum of positive squares in only one way, i.e., 12110400 + 6739216 = 3480^2 + 2596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18849619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 589035 + ... + 589066.

Almost surely, 2^18849616 is an apocalyptic number.

18849616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18849616 is a deficient number, since it is larger than the sum of its proper divisors (17671546).

18849616 is a wasteful number, since it uses less digits than its factorization.

18849616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178109 (or 1178103 counting only the distinct ones).

The product of its digits is 82944, while the sum is 43.

The square root of 18849616 is about 4341.6144462630. The cubic root of 18849616 is about 266.1342906442.

The spelling of 18849616 in words is "eighteen million, eight hundred forty-nine thousand, six hundred sixteen".