18140907 has 16 divisors (see below), whose sum is σ = 24842880. Its totient is φ = 11770752.

The previous prime is 18140897. The next prime is 18140909. The reversal of 18140907 is 70904181.

It is not a de Polignac number, because 18140907 - 2⁴ = 18140891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18140909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19548 + ... + 20454.

It is an arithmetic number, because the mean of its divisors is an integer number (1552680).

Almost surely, 2^18140907 is an apocalyptic number.

18140907 is a deficient number, since it is larger than the sum of its proper divisors (6701973).

18140907 is a wasteful number, since it uses less digits than its factorization.

18140907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 18140907 is about 4259.2143641756. The cubic root of 18140907 is about 262.7562160493.

The spelling of 18140907 in words is "eighteen million, one hundred forty thousand, nine hundred seven".