18713907 has 6 divisors (see below), whose sum is σ = 27031212. Its totient is φ = 12475932.

The previous prime is 18713899. The next prime is 18713911. The reversal of 18713907 is 70931781.

It is not a de Polignac number, because 18713907 - 2³ = 18713899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18763907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1039653 + ... + 1039670.

It is an arithmetic number, because the mean of its divisors is an integer number (4505202).

Almost surely, 2^18713907 is an apocalyptic number.

18713907 is a deficient number, since it is larger than the sum of its proper divisors (8317305).

18713907 is a wasteful number, since it uses less digits than its factorization.

18713907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079329 (or 2079326 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 18713907 is about 4325.9573506913. The cubic root of 18713907 is about 265.4940681961.

It can be divided in two parts, 1871 and 3907, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 18713907 in words is "eighteen million, seven hundred thirteen thousand, nine hundred seven".