18487108 has 6 divisors (see below), whose sum is σ = 32352446. Its totient is φ = 9243552.

The previous prime is 18487103. The next prime is 18487111. The reversal of 18487108 is 80178481.

It can be written as a sum of positive squares in only one way, i.e., 12376324 + 6110784 = 3518^2 + 2472^2 .

It is not an unprimeable number, because it can be changed into a prime (18487103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2310885 + ... + 2310892.

Almost surely, 2^18487108 is an apocalyptic number.

It is an amenable number.

18487108 is a deficient number, since it is larger than the sum of its proper divisors (13865338).

18487108 is a wasteful number, since it uses less digits than its factorization.

18487108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4621781 (or 4621779 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 37.

The square root of 18487108 is about 4299.6637077799. The cubic root of 18487108 is about 264.4171740717.

The spelling of 18487108 in words is "eighteen million, four hundred eighty-seven thousand, one hundred eight".