18148712 has 8 divisors (see below), whose sum is σ = 34028850. Its totient is φ = 9074352.

The previous prime is 18148687. The next prime is 18148717. The reversal of 18148712 is 21784181.

It can be written as a sum of positive squares in only one way, i.e., 14092516 + 4056196 = 3754^2 + 2014^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18148717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1134287 + ... + 1134302.

Almost surely, 2^18148712 is an apocalyptic number.

It is an amenable number.

18148712 is a deficient number, since it is larger than the sum of its proper divisors (15880138).

18148712 is a wasteful number, since it uses less digits than its factorization.

18148712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268595 (or 2268591 counting only the distinct ones).

The product of its digits is 3584, while the sum is 32.

The square root of 18148712 is about 4260.1305144326. The cubic root of 18148712 is about 262.7938936623.

The spelling of 18148712 in words is "eighteen million, one hundred forty-eight thousand, seven hundred twelve".