18103672 has 8 divisors (see below), whose sum is σ = 33944400. Its totient is φ = 9051832.

The previous prime is 18103663. The next prime is 18103681. The reversal of 18103672 is 27630181.

It is an interprime number because it is at equal distance from previous prime (18103663) and next prime (18103681).

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 18103672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1131472 + ... + 1131487.

It is an arithmetic number, because the mean of its divisors is an integer number (4243050).

Almost surely, 2^18103672 is an apocalyptic number.

It is an amenable number.

18103672 is a deficient number, since it is larger than the sum of its proper divisors (15840728).

18103672 is a wasteful number, since it uses less digits than its factorization.

18103672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262965 (or 2262961 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 18103672 is about 4254.8410076053. The cubic root of 18103672 is about 262.5763200608.

The spelling of 18103672 in words is "eighteen million, one hundred three thousand, six hundred seventy-two".